Can't enable memcached on php:7.4-v4-slim-apache

[ollyollyollyltd]

Build fails when trying to enable memcahced extension on php:7.4-v4-slim-apache

This appears to be caused by a mismatched PHP version,

Steps to reproduce:

• Create Dockerfile with contents:

ARG PHP_EXTENSIONS="memcached"
FROM thecodingmachine/php:7.4-v4-slim-apache

• Run docker build .

Expected behaviour:

• Image builds correctly
• PHP has memcahced extension installed + enabled

Actual behaviour:

• Image fails to build with errors:

...
+ phpenmod memcached
WARNING: Module memcached ini file doesn't exist under /etc/php/8.1/mods-available
WARNING: Module memcached ini file doesn't exist under /etc/php/8.1/mods-available
+ /usr/bin/real_php -m
+ grep memcached

The command '/bin/sh -c sudo -E PHP_EXTENSIONS="$PHP_EXTENSIONS" /usr/local/bin/install_selected_extensions.sh' returned a non-zero code: 1

Possible Solution

It appears that the script to install memcached calls apt-get install -y --no-install-recommends php-igbinary php-msgpack, which causes php8.1 to be installed as a dependency:

+ /usr/bin/real_php /usr/local/bin/install_selected_extensions.php
*** Installing extensions ***
WARNING: Module igbinary ini file doesn't exist under /etc/php/7.4/mods-available
WARNING: Module igbinary ini file doesn't exist under /etc/php/7.4/mods-available
WARNING: Module igbinary ini file doesn't exist under /etc/php/7.4/mods-available
WARNING: Module igbinary ini file doesn't exist under /etc/php/7.4/mods-available
+ '[' -n '' ']'
+ '[' -n 'php-igbinary php-msgpack' ']'
+ apt-get install -y --no-install-recommends php-igbinary php-msgpack
Reading package lists...
Building dependency tree...
Reading state information...
The following additional packages will be installed:
  php8.1-cli php8.1-common php8.1-igbinary php8.1-msgpack php8.1-opcache
  php8.1-phpdbg php8.1-readline
Suggested packages:
  php-pear
The following NEW packages will be installed:
  php-igbinary php-msgpack php8.1-cli php8.1-common php8.1-igbinary
  php8.1-msgpack php8.1-opcache php8.1-phpdbg php8.1-readline

I don't think this should be happening; perhaps the php-igbinary and / or php-msgpack should be explicitly updated to php7.4-igbinary and php7.4-msgpack? Possibly the repo has updated their php-* packages to point at php8.1-*

Full docker build output:

Sending build context to Docker daemon  267.2MB
Step 1/2 : ARG PHP_EXTENSIONS="memcached"
Step 2/2 : FROM thecodingmachine/php:7.4-v4-slim-apache
# Executing 7 build triggers
 ---> Running in 51c2f318d4d6
Removing intermediate container 51c2f318d4d6
 ---> Running in 5e257cd16689
Removing intermediate container 5e257cd16689
 ---> Running in 632e63c2db74
+ mv /etc/apt/apt.conf.d/docker-clean /tmp/docker-clean
+ apt-get update
Get:1 http://archive.ubuntu.com/ubuntu focal InRelease [265 kB]
Get:2 http://ppa.launchpad.net/ondrej/php/ubuntu focal InRelease [23.9 kB]
Get:3 http://archive.ubuntu.com/ubuntu focal-updates InRelease [114 kB]
Get:4 http://archive.ubuntu.com/ubuntu focal-backports InRelease [108 kB]
Get:5 http://ppa.launchpad.net/ondrej/php/ubuntu focal/main amd64 Packages [169 kB]
Get:6 http://security.ubuntu.com/ubuntu focal-security InRelease [114 kB]
Get:7 http://archive.ubuntu.com/ubuntu focal/restricted amd64 Packages [33.4 kB]
Get:8 http://archive.ubuntu.com/ubuntu focal/multiverse amd64 Packages [177 kB]
Get:9 http://archive.ubuntu.com/ubuntu focal/universe amd64 Packages [11.3 MB]
Get:10 http://security.ubuntu.com/ubuntu focal-security/multiverse amd64 Packages [30.1 kB]
Get:11 http://security.ubuntu.com/ubuntu focal-security/restricted amd64 Packages [833 kB]
Get:12 http://security.ubuntu.com/ubuntu focal-security/universe amd64 Packages [837 kB]
Get:13 http://security.ubuntu.com/ubuntu focal-security/main amd64 Packages [1417 kB]
Get:14 http://archive.ubuntu.com/ubuntu focal/main amd64 Packages [1275 kB]
Get:15 http://archive.ubuntu.com/ubuntu focal-updates/universe amd64 Packages [1119 kB]
Get:16 http://archive.ubuntu.com/ubuntu focal-updates/restricted amd64 Packages [952 kB]
Get:17 http://archive.ubuntu.com/ubuntu focal-updates/multiverse amd64 Packages [33.7 kB]
Get:18 http://archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages [1894 kB]
Get:19 http://archive.ubuntu.com/ubuntu focal-backports/main amd64 Packages [50.8 kB]
Get:20 http://archive.ubuntu.com/ubuntu focal-backports/universe amd64 Packages [22.4 kB]
Fetched 20.8 MB in 3s (6740 kB/s)
Reading package lists...
+ /usr/bin/real_php /usr/local/bin/install_selected_extensions.php
*** Installing extensions ***
WARNING: Module igbinary ini file doesn't exist under /etc/php/7.4/mods-available
WARNING: Module igbinary ini file doesn't exist under /etc/php/7.4/mods-available
WARNING: Module igbinary ini file doesn't exist under /etc/php/7.4/mods-available
WARNING: Module igbinary ini file doesn't exist under /etc/php/7.4/mods-available
+ '[' -n '' ']'
+ '[' -n 'php-igbinary php-msgpack' ']'
+ apt-get install -y --no-install-recommends php-igbinary php-msgpack
Reading package lists...
Building dependency tree...
Reading state information...
The following additional packages will be installed:
  php8.1-cli php8.1-common php8.1-igbinary php8.1-msgpack php8.1-opcache
  php8.1-phpdbg php8.1-readline
Suggested packages:
  php-pear
The following NEW packages will be installed:
  php-igbinary php-msgpack php8.1-cli php8.1-common php8.1-igbinary
  php8.1-msgpack php8.1-opcache php8.1-phpdbg php8.1-readline
0 upgraded, 9 newly installed, 0 to remove and 19 not upgraded.
Need to get 4893 kB of archives.
After this operation, 21.8 MB of additional disk space will be used.
Get:1 http://ppa.launchpad.net/ondrej/php/ubuntu focal/main amd64 php8.1-common amd64 8.1.1-2+ubuntu20.04.1+deb.sury.org+1 [1089 kB]
Get:2 http://ppa.launchpad.net/ondrej/php/ubuntu focal/main amd64 php8.1-opcache amd64 8.1.1-2+ubuntu20.04.1+deb.sury.org+1 [331 kB]
Get:3 http://ppa.launchpad.net/ondrej/php/ubuntu focal/main amd64 php8.1-readline amd64 8.1.1-2+ubuntu20.04.1+deb.sury.org+1 [12.8 kB]
Get:4 http://ppa.launchpad.net/ondrej/php/ubuntu focal/main amd64 php8.1-cli amd64 8.1.1-2+ubuntu20.04.1+deb.sury.org+1 [1660 kB]
Get:5 http://ppa.launchpad.net/ondrej/php/ubuntu focal/main amd64 php8.1-phpdbg amd64 8.1.1-2+ubuntu20.04.1+deb.sury.org+1 [1676 kB]
Get:6 http://ppa.launchpad.net/ondrej/php/ubuntu focal/main amd64 php8.1-igbinary amd64 3.2.6+2.0.8-6+ubuntu20.04.1+deb.sury.org+10 [82.1 kB]
Get:7 http://ppa.launchpad.net/ondrej/php/ubuntu focal/main amd64 php-igbinary amd64 3.2.6+2.0.8-6+ubuntu20.04.1+deb.sury.org+10 [5132 B]
Get:8 http://ppa.launchpad.net/ondrej/php/ubuntu focal/main amd64 php8.1-msgpack amd64 2.2.0~rc1+2.1.2+0.5.7-6+ubuntu20.04.1+deb.sury.org+10 [31.6 kB]
Get:9 http://ppa.launchpad.net/ondrej/php/ubuntu focal/main amd64 php-msgpack amd64 2.2.0~rc1+2.1.2+0.5.7-6+ubuntu20.04.1+deb.sury.org+10 [4296 B]
debconf: delaying package configuration, since apt-utils is not installed
Fetched 4893 kB in 2s (2476 kB/s)
Selecting previously unselected package php8.1-common.
(Reading database ... 11169 files and directories currently installed.)
Preparing to unpack .../0-php8.1-common_8.1.1-2+ubuntu20.04.1+deb.sury.org+1_amd64.deb ...
Unpacking php8.1-common (8.1.1-2+ubuntu20.04.1+deb.sury.org+1) ...
Selecting previously unselected package php8.1-opcache.
Preparing to unpack .../1-php8.1-opcache_8.1.1-2+ubuntu20.04.1+deb.sury.org+1_amd64.deb ...
Unpacking php8.1-opcache (8.1.1-2+ubuntu20.04.1+deb.sury.org+1) ...
Selecting previously unselected package php8.1-readline.
Preparing to unpack .../2-php8.1-readline_8.1.1-2+ubuntu20.04.1+deb.sury.org+1_amd64.deb ...
Unpacking php8.1-readline (8.1.1-2+ubuntu20.04.1+deb.sury.org+1) ...
Selecting previously unselected package php8.1-cli.
Preparing to unpack .../3-php8.1-cli_8.1.1-2+ubuntu20.04.1+deb.sury.org+1_amd64.deb ...
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Unpacking php8.1-phpdbg (8.1.1-2+ubuntu20.04.1+deb.sury.org+1) ...
Selecting previously unselected package php8.1-igbinary.
Preparing to unpack .../5-php8.1-igbinary_3.2.6+2.0.8-6+ubuntu20.04.1+deb.sury.org+10_amd64.deb ...
Unpacking php8.1-igbinary (3.2.6+2.0.8-6+ubuntu20.04.1+deb.sury.org+10) ...
Selecting previously unselected package php-igbinary.
Preparing to unpack .../6-php-igbinary_3.2.6+2.0.8-6+ubuntu20.04.1+deb.sury.org+10_amd64.deb ...
Unpacking php-igbinary (3.2.6+2.0.8-6+ubuntu20.04.1+deb.sury.org+10) ...
Selecting previously unselected package php8.1-msgpack.
Preparing to unpack .../7-php8.1-msgpack_2.2.0~rc1+2.1.2+0.5.7-6+ubuntu20.04.1+deb.sury.org+10_amd64.deb ...
Unpacking php8.1-msgpack (2.2.0~rc1+2.1.2+0.5.7-6+ubuntu20.04.1+deb.sury.org+10) ...
Selecting previously unselected package php-msgpack.
Preparing to unpack .../8-php-msgpack_2.2.0~rc1+2.1.2+0.5.7-6+ubuntu20.04.1+deb.sury.org+10_amd64.deb ...
Unpacking php-msgpack (2.2.0~rc1+2.1.2+0.5.7-6+ubuntu20.04.1+deb.sury.org+10) ...
Setting up php8.1-common (8.1.1-2+ubuntu20.04.1+deb.sury.org+1) ...

Creating config file /etc/php/8.1/mods-available/calendar.ini with new version

Creating config file /etc/php/8.1/mods-available/ctype.ini with new version

Creating config file /etc/php/8.1/mods-available/exif.ini with new version

Creating config file /etc/php/8.1/mods-available/fileinfo.ini with new version

Creating config file /etc/php/8.1/mods-available/ffi.ini with new version

Creating config file /etc/php/8.1/mods-available/ftp.ini with new version

Creating config file /etc/php/8.1/mods-available/gettext.ini with new version

Creating config file /etc/php/8.1/mods-available/iconv.ini with new version

Creating config file /etc/php/8.1/mods-available/pdo.ini with new version

Creating config file /etc/php/8.1/mods-available/phar.ini with new version

Creating config file /etc/php/8.1/mods-available/posix.ini with new version

Creating config file /etc/php/8.1/mods-available/shmop.ini with new version

Creating config file /etc/php/8.1/mods-available/sockets.ini with new version

Creating config file /etc/php/8.1/mods-available/sysvmsg.ini with new version

Creating config file /etc/php/8.1/mods-available/sysvsem.ini with new version

Creating config file /etc/php/8.1/mods-available/sysvshm.ini with new version

Creating config file /etc/php/8.1/mods-available/tokenizer.ini with new version
Setting up php8.1-readline (8.1.1-2+ubuntu20.04.1+deb.sury.org+1) ...

Creating config file /etc/php/8.1/mods-available/readline.ini with new version
Setting up php8.1-opcache (8.1.1-2+ubuntu20.04.1+deb.sury.org+1) ...

Creating config file /etc/php/8.1/mods-available/opcache.ini with new version
Setting up php8.1-cli (8.1.1-2+ubuntu20.04.1+deb.sury.org+1) ...
update-alternatives: using /usr/bin/php8.1 to provide /usr/bin/php (php) in auto mode
update-alternatives: warning: not replacing /usr/bin/php with a link
update-alternatives: warning: skip creation of /usr/share/man/man1/php.1.gz because associated file /usr/share/man/man1/php8.1.1.gz (of link group php) doesn't exist
update-alternatives: using /usr/bin/phar8.1 to provide /usr/bin/phar (phar) in auto mode
update-alternatives: warning: skip creation of /usr/share/man/man1/phar.1.gz because associated file /usr/share/man/man1/phar8.1.1.gz (of link group phar) doesn't exist
update-alternatives: using /usr/bin/phar.phar8.1 to provide /usr/bin/phar.phar (phar.phar) in auto mode
update-alternatives: warning: skip creation of /usr/share/man/man1/phar.phar.1.gz because associated file /usr/share/man/man1/phar.phar8.1.1.gz (of link group phar.phar) doesn't exist

Creating config file /etc/php/8.1/cli/php.ini with new version
Setting up php8.1-igbinary (3.2.6+2.0.8-6+ubuntu20.04.1+deb.sury.org+10) ...
Setting up php-igbinary (3.2.6+2.0.8-6+ubuntu20.04.1+deb.sury.org+10) ...
Setting up php8.1-phpdbg (8.1.1-2+ubuntu20.04.1+deb.sury.org+1) ...
update-alternatives: using /usr/bin/phpdbg8.1 to provide /usr/bin/phpdbg (phpdbg) in auto mode
update-alternatives: warning: skip creation of /usr/share/man/man1/phpdbg.1.gz because associated file /usr/share/man/man1/phpdbg8.1.1.gz (of link group phpdbg) doesn't exist

Creating config file /etc/php/8.1/phpdbg/php.ini with new version
Setting up php8.1-msgpack (2.2.0~rc1+2.1.2+0.5.7-6+ubuntu20.04.1+deb.sury.org+10) ...
Setting up php-msgpack (2.2.0~rc1+2.1.2+0.5.7-6+ubuntu20.04.1+deb.sury.org+10) ...
Processing triggers for php8.1-cli (8.1.1-2+ubuntu20.04.1+deb.sury.org+1) ...
Processing triggers for php8.1-phpdbg (8.1.1-2+ubuntu20.04.1+deb.sury.org+1) ...
+ '[' -n '' ']'
+ '[' -n memcached ']'
+ set +e
+ PACKAGE_NAME=memcached
+ apt-cache search --names-only php7.4-memcached
+ grep php7.4-memcached
php7.4-memcached - memcached extension module for PHP, uses libmemcached
+ set -e
+ apt-get install -y --no-install-recommends php7.4-memcached
Reading package lists...
Building dependency tree...
Reading state information...
The following additional packages will be installed:
  libmemcached11 php7.4-igbinary php7.4-msgpack
The following NEW packages will be installed:
  libmemcached11 php7.4-igbinary php7.4-memcached php7.4-msgpack
0 upgraded, 4 newly installed, 0 to remove and 19 not upgraded.
Need to get 242 kB of archives.
After this operation, 796 kB of additional disk space will be used.
Get:1 http://archive.ubuntu.com/ubuntu focal/main amd64 libmemcached11 amd64 1.0.18-4.2ubuntu2 [83.5 kB]
Get:2 http://ppa.launchpad.net/ondrej/php/ubuntu focal/main amd64 php7.4-igbinary amd64 3.2.6+2.0.8-6+ubuntu20.04.1+deb.sury.org+10 [83.7 kB]
Get:3 http://ppa.launchpad.net/ondrej/php/ubuntu focal/main amd64 php7.4-msgpack amd64 2.2.0~rc1+2.1.2+0.5.7-6+ubuntu20.04.1+deb.sury.org+10 [31.0 kB]
Get:4 http://ppa.launchpad.net/ondrej/php/ubuntu focal/main amd64 php7.4-memcached amd64 3.1.5+2.2.0-14+ubuntu20.04.1+deb.sury.org+10 [43.7 kB]
debconf: delaying package configuration, since apt-utils is not installed
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Selecting previously unselected package php7.4-igbinary.
(Reading database ... 11300 files and directories currently installed.)
Preparing to unpack .../php7.4-igbinary_3.2.6+2.0.8-6+ubuntu20.04.1+deb.sury.org+10_amd64.deb ...
Unpacking php7.4-igbinary (3.2.6+2.0.8-6+ubuntu20.04.1+deb.sury.org+10) ...
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Unpacking libmemcached11:amd64 (1.0.18-4.2ubuntu2) ...
Selecting previously unselected package php7.4-memcached.
Preparing to unpack .../php7.4-memcached_3.1.5+2.2.0-14+ubuntu20.04.1+deb.sury.org+10_amd64.deb ...
Unpacking php7.4-memcached (3.1.5+2.2.0-14+ubuntu20.04.1+deb.sury.org+10) ...
Setting up php7.4-msgpack (2.2.0~rc1+2.1.2+0.5.7-6+ubuntu20.04.1+deb.sury.org+10) ...
Setting up php7.4-igbinary (3.2.6+2.0.8-6+ubuntu20.04.1+deb.sury.org+10) ...
Setting up libmemcached11:amd64 (1.0.18-4.2ubuntu2) ...
Setting up php7.4-memcached (3.1.5+2.2.0-14+ubuntu20.04.1+deb.sury.org+10) ...
Processing triggers for libc-bin (2.31-0ubuntu9.2) ...
Processing triggers for php7.4-cli (7.4.26-1+ubuntu20.04.1+deb.sury.org+2) ...
Processing triggers for libapache2-mod-php7.4 (7.4.26-1+ubuntu20.04.1+deb.sury.org+2) ...
+ '[' -n '' ']'
+ '[' -n '' ']'
+ '[' -n memcached ']'
+ phpenmod memcached
WARNING: Module memcached ini file doesn't exist under /etc/php/8.1/mods-available
WARNING: Module memcached ini file doesn't exist under /etc/php/8.1/mods-available
+ /usr/bin/real_php -m
+ grep memcached
The command '/bin/sh -c sudo -E PHP_EXTENSIONS="$PHP_EXTENSIONS" /usr/local/bin/install_selected_extensions.sh' returned a non-zero code: 1
olly@slowzone ~/w/b/a/site (staging)> docker build -f docker/Dockerfile.test .
Sending build context to Docker daemon  267.2MB
Step 1/2 : ARG PHP_EXTENSIONS="memcached"
Step 2/2 : FROM thecodingmachine/php:7.4-v4-slim-apache
# Executing 7 build triggers
 ---> Using cache
 ---> Using cache
 ---> Running in d58f0d7b605c
+ mv /etc/apt/apt.conf.d/docker-clean /tmp/docker-clean
+ apt-get update
Get:1 http://ppa.launchpad.net/ondrej/php/ubuntu focal InRelease [23.9 kB]
Get:2 http://archive.ubuntu.com/ubuntu focal InRelease [265 kB]
Get:3 http://security.ubuntu.com/ubuntu focal-security InRelease [114 kB]
Get:4 http://ppa.launchpad.net/ondrej/php/ubuntu focal/main amd64 Packages [169 kB]
Get:5 http://archive.ubuntu.com/ubuntu focal-updates InRelease [114 kB]
Get:6 http://archive.ubuntu.com/ubuntu focal-backports InRelease [108 kB]
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Get:8 http://archive.ubuntu.com/ubuntu focal/restricted amd64 Packages [33.4 kB]
Get:9 http://archive.ubuntu.com/ubuntu focal/multiverse amd64 Packages [177 kB]
Get:10 http://archive.ubuntu.com/ubuntu focal/universe amd64 Packages [11.3 MB]
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Fetched 20.8 MB in 4s (5174 kB/s)
Reading package lists...
+ /usr/bin/real_php /usr/local/bin/install_selected_extensions.php
*** Installing extensions ***
WARNING: Module igbinary ini file doesn't exist under /etc/php/7.4/mods-available
WARNING: Module igbinary ini file doesn't exist under /etc/php/7.4/mods-available
WARNING: Module igbinary ini file doesn't exist under /etc/php/7.4/mods-available
WARNING: Module igbinary ini file doesn't exist under /etc/php/7.4/mods-available
+ '[' -n '' ']'
+ '[' -n 'php-igbinary php-msgpack' ']'
+ apt-get install -y --no-install-recommends php-igbinary php-msgpack
Reading package lists...
Building dependency tree...
Reading state information...
The following additional packages will be installed:
  php8.1-cli php8.1-common php8.1-igbinary php8.1-msgpack php8.1-opcache
  php8.1-phpdbg php8.1-readline
Suggested packages:
  php-pear
The following NEW packages will be installed:
  php-igbinary php-msgpack php8.1-cli php8.1-common php8.1-igbinary
  php8.1-msgpack php8.1-opcache php8.1-phpdbg php8.1-readline
0 upgraded, 9 newly installed, 0 to remove and 19 not upgraded.
Need to get 4893 kB of archives.
After this operation, 21.8 MB of additional disk space will be used.
Get:1 http://ppa.launchpad.net/ondrej/php/ubuntu focal/main amd64 php8.1-common amd64 8.1.1-2+ubuntu20.04.1+deb.sury.org+1 [1089 kB]
Get:2 http://ppa.launchpad.net/ondrej/php/ubuntu focal/main amd64 php8.1-opcache amd64 8.1.1-2+ubuntu20.04.1+deb.sury.org+1 [331 kB]
Get:3 http://ppa.launchpad.net/ondrej/php/ubuntu focal/main amd64 php8.1-readline amd64 8.1.1-2+ubuntu20.04.1+deb.sury.org+1 [12.8 kB]
Get:4 http://ppa.launchpad.net/ondrej/php/ubuntu focal/main amd64 php8.1-cli amd64 8.1.1-2+ubuntu20.04.1+deb.sury.org+1 [1660 kB]
Get:5 http://ppa.launchpad.net/ondrej/php/ubuntu focal/main amd64 php8.1-phpdbg amd64 8.1.1-2+ubuntu20.04.1+deb.sury.org+1 [1676 kB]
Get:6 http://ppa.launchpad.net/ondrej/php/ubuntu focal/main amd64 php8.1-igbinary amd64 3.2.6+2.0.8-6+ubuntu20.04.1+deb.sury.org+10 [82.1 kB]
Get:7 http://ppa.launchpad.net/ondrej/php/ubuntu focal/main amd64 php-igbinary amd64 3.2.6+2.0.8-6+ubuntu20.04.1+deb.sury.org+10 [5132 B]
Get:8 http://ppa.launchpad.net/ondrej/php/ubuntu focal/main amd64 php8.1-msgpack amd64 2.2.0~rc1+2.1.2+0.5.7-6+ubuntu20.04.1+deb.sury.org+10 [31.6 kB]
Get:9 http://ppa.launchpad.net/ondrej/php/ubuntu focal/main amd64 php-msgpack amd64 2.2.0~rc1+2.1.2+0.5.7-6+ubuntu20.04.1+deb.sury.org+10 [4296 B]
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Setting up php8.1-common (8.1.1-2+ubuntu20.04.1+deb.sury.org+1) ...

Creating config file /etc/php/8.1/mods-available/calendar.ini with new version

Creating config file /etc/php/8.1/mods-available/ctype.ini with new version

Creating config file /etc/php/8.1/mods-available/exif.ini with new version

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Creating config file /etc/php/8.1/mods-available/gettext.ini with new version

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Creating config file /etc/php/8.1/mods-available/pdo.ini with new version

Creating config file /etc/php/8.1/mods-available/phar.ini with new version

Creating config file /etc/php/8.1/mods-available/posix.ini with new version

Creating config file /etc/php/8.1/mods-available/shmop.ini with new version

Creating config file /etc/php/8.1/mods-available/sockets.ini with new version

Creating config file /etc/php/8.1/mods-available/sysvmsg.ini with new version

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Creating config file /etc/php/8.1/mods-available/tokenizer.ini with new version
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update-alternatives: using /usr/bin/php8.1 to provide /usr/bin/php (php) in auto mode
update-alternatives: warning: not replacing /usr/bin/php with a link
update-alternatives: warning: skip creation of /usr/share/man/man1/php.1.gz because associated file /usr/share/man/man1/php8.1.1.gz (of link group php) doesn't exist
update-alternatives: using /usr/bin/phar8.1 to provide /usr/bin/phar (phar) in auto mode
update-alternatives: warning: skip creation of /usr/share/man/man1/phar.1.gz because associated file /usr/share/man/man1/phar8.1.1.gz (of link group phar) doesn't exist
update-alternatives: using /usr/bin/phar.phar8.1 to provide /usr/bin/phar.phar (phar.phar) in auto mode
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Creating config file /etc/php/8.1/cli/php.ini with new version
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Creating config file /etc/php/8.1/phpdbg/php.ini with new version
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Setting up php-msgpack (2.2.0~rc1+2.1.2+0.5.7-6+ubuntu20.04.1+deb.sury.org+10) ...
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Processing triggers for php8.1-phpdbg (8.1.1-2+ubuntu20.04.1+deb.sury.org+1) ...
+ '[' -n '' ']'
+ '[' -n memcached ']'
+ set +e
+ PACKAGE_NAME=memcached
+ apt-cache search --names-only php7.4-memcached
+ grep php7.4-memcached
php7.4-memcached - memcached extension module for PHP, uses libmemcached
+ set -e
+ apt-get install -y --no-install-recommends php7.4-memcached
Reading package lists...
Building dependency tree...
Reading state information...
The following additional packages will be installed:
  libmemcached11 php7.4-igbinary php7.4-msgpack
The following NEW packages will be installed:
  libmemcached11 php7.4-igbinary php7.4-memcached php7.4-msgpack
0 upgraded, 4 newly installed, 0 to remove and 19 not upgraded.
Need to get 242 kB of archives.
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Get:2 http://archive.ubuntu.com/ubuntu focal/main amd64 libmemcached11 amd64 1.0.18-4.2ubuntu2 [83.5 kB]
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+ '[' -n '' ']'
+ '[' -n '' ']'
+ '[' -n memcached ']'
+ phpenmod memcached
WARNING: Module memcached ini file doesn't exist under /etc/php/8.1/mods-available
WARNING: Module memcached ini file doesn't exist under /etc/php/8.1/mods-available
+ /usr/bin/real_php -m
+ grep memcached
The command '/bin/sh -c sudo -E PHP_EXTENSIONS="$PHP_EXTENSIONS" /usr/local/bin/install_selected_extensions.sh' returned a non-zero code: 1

Your Environment

This error is happening on my laptop (Ubuntu Mate 21.10) as well as on a Travis CI machine

[ollyollyollyltd]

Workaround:

FROM thecodingmachine/php:7.4-v4-slim-apache

RUN sudo apt-get update && \
    sudo apt-get install php7.4-memcached memcached -y

CMD sudo /usr/sbin/phpenmod memcached igbinary msgpack && apache2-foreground

This will install and enable memcached (and it's PHP module dependencies) without triggering the error.

Investigation

It seems that installing memcached via the PHP_EXTENSIONS ARG triggers PHP 8.1 to be installed alongside PHP 7.4. This then means (I think) that phpenmod by default points to 8.1, and as we have not installed memcached for 8.1 the command fails.

A couple of potential solutions to this:

• Install explicitly versioned PHP extensions (i.e. php7.4-memcached or php8.1-memcached rather than php-memcached) when using apt-get
• Always pass the -v argument to phpenmod to specify php version: phpenmod -v7.4 memcached

[mistraloz]

Thx for your investigation. If you may make a PR, it's would be very nice.

It's may require to change :

• This file https://github.com/thecodingmachine/docker-images-php/blob/v4/extensions/core/memcached/install.sh
• And/or this one https://github.com/thecodingmachine/docker-images-php/blob/v4/extensions/core/docker-install.sh#L14

As you can see in second file, we used apt-cache search --names-only "php${PHP_VERSION}-$PACKAGE_NAME" to find if there is specific version for this php version or if we have to use the common global name. We may require to use same case for phpenmod -v7.4 (or may be just always forward the version). It's require some test to be sure with all version (you may add your test case in build-and-test.sh)

There is no obligation but it's may be very helpful.

[ollyollyollyltd]

@mistraloz I'll make a pull request when I have some down time at work, thanks.

[ollyollyollyltd]

Update on this:

I've added a commit that will explicitly pass -v $PHP_VERSION whenever phpenmod or phpdismod is called: ollyollyollyltd@1a66a2e

build-and-test.sh is currently failing on installation memcached however:

# PHP_VERSION=8.0 BRANCH=v4 VARIANT=apache ./build-and-test.sh

...
#8 812.9 + set -e
#8 812.9 + apt-get install -y --no-install-recommends php8.0-memcached
#8 813.4 debconf: delaying package configuration, since apt-utils is not installed
#8 813.8 + '[' -n '' ']'
#8 813.8 + '[' -n '' ']'
#8 813.8 + '[' -n memcached ']'
#8 813.8 + phpenmod -v 8.0 memcached
#8 813.8 + /usr/bin/real_php -m
#8 813.8 + grep memcached

executor failed running [/bin/sh -c cd /usr/local/lib/thecodingmachine-php/extensions/current/ && ./install_all.sh && ./disable_all.sh]: exit code: 1

I'm currently trying to isolate where the error occurs so I can reproduce it without running the whole build-and-test.sh script.