Dockerfile

FROM ruby:2.4-alpine3.7 AS RUBY

FROM mobingi/baseimage:alpine-3.7
LABEL com.mobingi.code_dir="/srv/code"

COPY --from=RUBY /usr/local /usr/local/

RUN apk add redis --no-cache && install -d /run/nginx
RUN runDeps="$( \
		scanelf --needed --nobanner --format '%n#p' --recursive /usr/local \
			| tr ',' '\n' \
			| sort -u \
			| awk 'system("[ -e /usr/local/lib/" $1 " ]") == 0 { next } { print "so:" $1 }' \
	)" \
	&& apk add --no-cache $runDeps \
		bzip2 \
		ca-certificates \
		libffi-dev \
		libressl-dev \
		procps \
		yaml-dev \
		zlib-dev
RUN install -d /srv/code

ENV GEM_HOME /usr/local/bundle
ENV BUNDLE_PATH="$GEM_HOME" \
	BUNDLE_BIN="$GEM_HOME/bin" \
	BUNDLE_SILENCE_ROOT_WARNING=1 \
	BUNDLE_APP_CONFIG="$GEM_HOME"
ENV PATH $BUNDLE_BIN:$PATH
RUN mkdir -p "$GEM_HOME" "$BUNDLE_BIN" \
	&& chmod 777 "$GEM_HOME" "$BUNDLE_BIN"

ENV RACK_ENV production
EXPOSE 9292
WORKDIR /srv/code