Docker images need libyaml and headers

Author: eregon

doc/user/installing-libyaml.md

@@ -13,10 +13,24 @@ This is done automatically by Ruby managers, and mentioned in the post-install m
 
 ### Fedora-based: RHEL, Oracle Linux, etc
 
+#### Fedora
+
 ```bash
 sudo dnf install libyaml-devel
 ```
 
+#### Oracle Linux 7
+
+```bash
+sudo yum install --enablerepo=ol7_optional_latest libyaml-devel
+```
+
+#### Oracle Linux 8
+
+```bash
+sudo dnf install --enablerepo=ol8_codeready_builder libyaml-devel
+```
+
 ### Debian-based: Ubuntu, etc
 
 ```bash

tool/docker-configs.yaml

@@ -3,6 +3,7 @@ rpm: &rpm
   specs: which findutils
   zlib: zlib-devel
   openssl: openssl-devel
+  yaml: libyaml-devel
   cext: gcc make
   set-locale:
     - ENV LANG=en_US.UTF-8
@@ -13,6 +14,7 @@ deb: &deb
   specs: netbase
   zlib: libz-dev
   openssl: libssl-dev
+  yaml: libyaml-dev
   cext: gcc make
   set-locale:
     # Uncomment the en_US.UTF-8 line in /etc/locale.gen
@@ -23,13 +25,15 @@ deb: &deb
 
 ol7:
   base: oraclelinux:7-slim
-  install: RUN yum install -y
+  # --enablerepo needed for libyaml-devel
+  install: RUN yum install --enablerepo=ol7_optional_latest -y
   locale:
   <<: *rpm
 
 ol8:
   base: oraclelinux:8-slim
-  install: RUN microdnf install -y
+  # --enablerepo needed for libyaml-devel
+  install: RUN microdnf install --enablerepo=ol8_codeready_builder -y
   locale: glibc-langpack-en
   <<: *rpm
 

tool/docker.rb

@@ -125,6 +125,7 @@ def docker(*args)
 
       packages << distro.fetch('zlib')
       packages << distro.fetch('openssl')
+      packages << distro.fetch('yaml')
       packages << distro.fetch('cext')
 
       proxy_vars = []