from gitlab/gitlab-runner:alpine

ENV http_proxy=<corporate_proxy>
ENV https_proxy=<corporate_proxy>

RUN apk add vim wget curl nmap lsof bash bash-completion which

CMD ["/bin/bash"]
RUN ls -l /bin # THIS WORKS, I CAN SEE 'BASH' SHOW UP WITH 755 OWNED BY ROOT
RUN which bash # THIS ALSO WORKS
RUN /bin/bash -c "echo hi" # YES, THIS WORKS TOO