Merge pull request #8 from infosiftr/stackbrew

Script for stackbrew and updating, fix 1.9 onbuild FROM line

1.9/onbuild/Dockerfile

@@ -1,4 +1,4 @@
-FROM ruby:1.9.3
+FROM ruby:1.9.3-p547
 
 RUN mkdir -p /usr/src/app
 WORKDIR /usr/src/app

generate-stackbrew-library.sh

@@ -0,0 +1,44 @@
+#!/bin/bash
+set -e
+
+declare -A aliases
+aliases=(
+	[2.1]='latest'
+)
+
+cd "$(dirname "$(readlink -f "$BASH_SOURCE")")"
+
+versions=( */ )
+versions=( "${versions[@]%/}" )
+url='git://github.com/docker-library/ruby'
+
+echo '# maintainer: InfoSiftr <github@infosiftr.com> (@infosiftr)'
+
+for version in "${versions[@]}"; do
+	commit="$(git log -1 --format='format:%H' "$version")"
+	fullVersion="$(grep -m1 'ENV RUBY_VERSION ' "$version/Dockerfile" | cut -d' ' -f3)"
+	
+	versionAliases=()
+	while [ "$fullVersion" != "$version" -a "${fullVersion%[.-]*}" != "$fullVersion" ]; do
+		versionAliases+=( $fullVersion )
+		fullVersion="${fullVersion%[.-]*}"
+	done
+	versionAliases+=( $version ${aliases[$version]} )
+	
+	echo
+	for va in "${versionAliases[@]}"; do
+		echo "$va: ${url}@${commit} $version"
+	done
+	
+	for variant in onbuild; do
+		echo
+		for va in "${versionAliases[@]}"; do
+			if [ "$va" = 'latest' ]; then
+				va="$variant"
+			else
+				va="$va-$variant"
+			fi
+			echo "$va: ${url}@${commit} $version/$variant"
+		done
+	done
+done

update.sh

@@ -0,0 +1,24 @@
+#!/bin/bash
+set -e
+
+cd "$(dirname "$(readlink -f "$BASH_SOURCE")")"
+
+versions=( "$@" )
+if [ ${#versions[@]} -eq 0 ]; then
+	versions=( */ )
+fi
+versions=( "${versions[@]%/}" )
+
+for version in "${versions[@]}"; do
+	fullVersion="$(curl -sSL "http://cache.ruby-lang.org/pub/ruby/$version/" \
+		| grep -E '<a href="ruby-'"$version"'.[^"]+\.tar\.bz2' \
+		| grep -vE 'preview|rc' \
+		| sed -r 's!.*<a href="ruby-([^"]+)\.tar\.bz2.*!\1!' \
+		| sort -V | tail -1)"
+	(
+		set -x
+		sed -ri 's/^(ENV RUBY_MAJOR) .*/\1 '"$version"'/' "$version/Dockerfile"
+		sed -ri 's/^(ENV RUBY_VERSION) .*/\1 '"$fullVersion"'/' "$version/Dockerfile"
+		sed -ri 's/^(FROM ruby):.*/\1:'"$fullVersion"'/' "$version/"*"/Dockerfile"
+	)
+done