Ruby alpine

.travis.yml

@@ -4,6 +4,7 @@ services: docker
 env:
   - VERSION=2.3 VARIANT=
   - VERSION=2.3 VARIANT=slim
+  - VERSION=2.3 VARIANT=alpine
   - VERSION=2.2 VARIANT=
   - VERSION=2.2 VARIANT=slim
   - VERSION=2.1 VARIANT=

2.3/alpine/Dockerfile

@@ -0,0 +1,81 @@
+FROM alpine:3.3
+
+ENV RUBY_MAJOR 2.3
+ENV RUBY_VERSION 2.3.0
+ENV RUBY_DOWNLOAD_SHA256 ba5ba60e5f1aa21b4ef8e9bf35b9ddb57286cb546aac4b5a28c71f459467e507
+ENV RUBYGEMS_VERSION 2.5.1
+
+# skip installing gem documentation
+RUN echo -e 'install: --no-document\nupdate: --no-document' >> "$HOME/.gemrc"
+
+RUN set -x \
+	&& apk add --no-cache --virtual .ruby-builddeps \
+		autoconf \
+		bison \
+		bzip2 \
+		bzip2-dev \
+		ca-certificates \
+		coreutils \
+		curl \
+		gcc \
+		gdbm-dev \
+		glib-dev \
+		libc-dev \
+		libedit-dev \
+		libffi-dev \
+		libxml2-dev \
+		libxslt-dev \
+		linux-headers \
+		make \
+		ncurses-dev \
+		openssl-dev \
+		procps \
+		ruby \
+		yaml-dev \
+		zlib-dev \
+	&& curl -fSL -o ruby.tar.gz "http://cache.ruby-lang.org/pub/ruby/$RUBY_MAJOR/ruby-$RUBY_VERSION.tar.gz" \
+	&& echo "$RUBY_DOWNLOAD_SHA256 *ruby.tar.gz" | sha256sum -c - \
+	&& mkdir -p /usr/src \
+	&& tar -xzf ruby.tar.gz -C /usr/src \
+	&& mv "/usr/src/ruby-$RUBY_VERSION" /usr/src/ruby \
+	&& rm ruby.tar.gz \
+	&& cd /usr/src/ruby \
+	&& autoconf \
+	# the configure script does not detect isnan/isinf as macros
+	&& ac_cv_func_isnan=yes ac_cv_func_isinf=yes ./configure --disable-install-doc \
+	&& make -j"$(nproc)" \
+	&& make install \
+	&& gem update --system $RUBYGEMS_VERSION \
+	&& runDeps="$( \
+		scanelf --needed --nobanner --recursive /usr/local \
+			| awk '{ gsub(/,/, "\nso:", $2); print "so:" $2 }' \
+			| sort -u \
+			| xargs -r apk info --installed \
+			| sort -u \
+	)" \
+	&& apk add --virtual .ruby-rundeps $runDeps \
+		bzip2 \
+		ca-certificates \
+		curl \
+		libffi-dev \
+		openssl-dev \
+		yaml-dev \
+		procps \
+		zlib-dev \
+	&& apk del .ruby-builddeps \
+	&& rm -r /usr/src/ruby
+
+# install things globally, for great justice
+ENV GEM_HOME /usr/local/bundle
+ENV PATH $GEM_HOME/bin:$PATH
+
+ENV BUNDLER_VERSION 1.11.2
+
+RUN gem install bundler --version "$BUNDLER_VERSION" \
+	&& bundle config --global path "$GEM_HOME" \
+	&& bundle config --global bin "$GEM_HOME/bin"
+
+# don't create ".bundle" in all our apps
+ENV BUNDLE_APP_CONFIG $GEM_HOME
+
+CMD [ "irb" ]

generate-stackbrew-library.sh

@@ -30,7 +30,7 @@ for version in "${versions[@]}"; do
 		echo "$va: ${url}@${commit} $version"
 	done
 
-	for variant in onbuild slim; do
+	for variant in onbuild slim alpine; do
 		commit="$(cd "$version/$variant" && git log -1 --format='format:%H' -- Dockerfile $(awk 'toupper($1) == "COPY" { for (i = 2; i < NF; i++) { print $i } }' Dockerfile))"
 		echo
 		for va in "${versionAliases[@]}"; do