FROM alpine:3.11.3 ARG go_pkg_url RUN apk add --update alpine-sdk linux-headers cmake openssh curl musl-dev go RUN adduser -D -s /bin/ash jenkins && \ passwd -u jenkins && \ ssh-keygen -A && \ mkdir /home/jenkins/.ssh && \ chown -R jenkins:jenkins /home/jenkins COPY authorized_keys /home/jenkins/.ssh/authorized_keys RUN chown -R jenkins:jenkins /home/jenkins/.ssh && \ chmod 600 /home/jenkins/.ssh/authorized_keys EXPOSE 22 CMD ["/usr/sbin/sshd", "-D"]