Dockerfile for installing RVM on Alpine Linux.
- This is a fork from Nic Doye [nicdoye/alpine-rvm]
- To keep this image minimal I'm removing building packages. If you want to use specific ruby version you probably need to install them and then remove them to keep image minimal:
RUN apk update \
&& apk add alpine-sdk \
&& rvm install ree \ # <-- example
&& apk del alpine-sdk \
&& rm -rf /var/cache/apk/*