[ruby] Update build

2.5/Dockerfile → Dockerfile

@@ -1,4 +1,10 @@
-FROM minidocks/base:3.8
+ARG version=2.5
+
+FROM minidocks/base:3.7 AS v2.4
+
+FROM minidocks/base AS v2.5
+
+FROM v${version}
 LABEL maintainer="Martin Hasoň <[email protected]>"
 
 # install things globally, for great justice and don't create ".bundle" in all our apps
@@ -15,10 +21,8 @@ RUN mkdir -p "$GEM_HOME" && chmod 777 "$GEM_HOME" && mkdir -p "$BUNDLE_CACHE_PAT
 
 COPY rootfs /
 
-RUN apk --update add 'ruby<2.6' ruby-irb \
+RUN apk --update add ruby ruby-irb \
     && gem install bundler \
     && clean
 
 CMD [ "irb" ]
-
-# see https://github.com/docker-library/ruby/blob/master/2.5/alpine3.8/Dockerfile

README.md

@@ -10,7 +10,7 @@ Tags
 ----
 
  Tag       | Size
----------- | ----
+ ---       | ----
  latest    | [![](https://images.microbadger.com/badges/image/minidocks/ruby.svg)](https://microbadger.com/images/minidocks/ruby)
  2.5       | [![](https://images.microbadger.com/badges/image/minidocks/ruby:2.5.svg)](https://microbadger.com/images/minidocks/ruby:2.5)
  2.4       | [![](https://images.microbadger.com/badges/image/minidocks/ruby:2.4.svg)](https://microbadger.com/images/minidocks/ruby:2.4)

build.sh

@@ -0,0 +1,19 @@
+#!/bin/sh
+set -e
+
+image="${namespace:-minidocks}/ruby"
+versions="
+2.4;2.4
+2.5;2.5
+latest;2.5
+"
+
+build() {
+    docker build $docker_opts --build-arg version="$2" -t "$image:$1" "$(dirname $0)"
+}
+
+case "$1" in
+    --versions) echo "$versions" | awk 'NF' | cut -d';' -f1;;
+    '') echo "$versions" | grep -v "^$" | while read -r version; do IFS=';'; build $version; done;;
+    *) args="$(echo "$versions" | grep -E "^$1(;|$)")"; if [ -n "$args" ]; then IFS=';'; build $args; else echo "Version $1 does not exist." >/dev/stderr; exit 1; fi
+esac