FROM docker.io/alpine:3.13

RUN apk add --no-cache openssh-client make git bash coreutils diffutils sudo

RUN echo "https://alpine.sutty.nl/alpine/v3.13/sutty" >> "/etc/apk/repositories" && \
    wget https://alpine.sutty.nl/alpine/sutty.pub -O "/etc/apk/keys/alpine@sutty.nl-5ea884cd.rsa.pub"

COPY packages /root/packages

RUN apk add --no-cache $(cat "/root/packages" | tr "\n" " ")
RUN sed -re "s/#(@platforms = )/\1/" -i "/usr/lib/ruby/2.7.0/rubygems.rb" && \
    mkdir -m 700 -p "~/.ssh"

COPY ssh/known_hosts /root/.ssh/known_hosts
COPY .gemrc /root/.gemrc