Replace supervisord with s6 (#4)

* Replace supervisord with s6

* Fix build and pre-run scripts

* Remove accidentally-committed old supervisord conf

* apt-get install --no-install-recommends

Author: iBug

.docker/build

@@ -1,13 +1,13 @@
-#!/bin/bash
+#!/bin/sh
 
 set -e
 set -x
 export DEBIAN_FRONTEND=noninteractive
 
 apt-get update 
-apt-get install -y \
+apt-get install -y --no-install-recommends \
     vsftpd \
-    supervisor \
+    s6 \
     nginx \
     php-fpm \
     php-gd \
@@ -16,12 +16,11 @@ apt-get install -y \
     graphicsmagick \
     ffmpeg
 apt-get clean
+rm -rf /var/lib/apt/lists/*
+
 cp -L /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
 mkdir -p /var/run/sshd \
     /var/run/vsftpd/empty \
     /run/php
 
-apt-get clean
-rm -rf /var/lib/apt/lists/*
-
 echo "session required    pam_exec.so /opt/init_home.sh" >> /etc/pam.d/common-session

.docker/pre-run

@@ -1,3 +1,5 @@
+#!/bin/bash
+
 if [[ $HAVE_INITIALIZED == false ]]; then 
     useradd -m $PRIVATE_USERNAME -d /srv/ftp
     gpasswd -a $PRIVATE_USERNAME ftp

.docker/rootfs/etc/s6/nginx/run

@@ -0,0 +1,2 @@
+#!/bin/sh
+exec nginx -g 'daemon off;'

.docker/rootfs/etc/s6/nslcd/run

@@ -0,0 +1,2 @@
+#!/bin/sh
+exec /usr/sbin/nslcd -n

.docker/rootfs/etc/s6/php-fpm/run

@@ -0,0 +1,2 @@
+#!/bin/sh
+exec /usr/sbin/php-fpm8.2 --nodaemonize --fpm-config /etc/php/8.2/fpm/php-fpm.conf

.docker/rootfs/etc/s6/sftp/run

@@ -0,0 +1,2 @@
+#!/bin/sh
+exec /usr/sbin/sshd -D -e

.docker/rootfs/etc/s6/vsftpd/run

@@ -0,0 +1,2 @@
+#!/bin/sh
+exec /usr/sbin/vsftpd /etc/vsftpd/vsftpd.conf

.docker/rootfs/etc/supervisor/conf.d/supervisord.conf

@@ -1,3 +1,2 @@
-#!/bin/bash
-
-exec /usr/bin/supervisord
+#!/bin/sh
+exec /usr/bin/s6-svscan /etc/s6