Docker build is not stopping on failed run command

问题

I have this in a Dockerfile

RUN eval `ssh-agent -s` && ssh-add /root/.ssh/id_rsa

and I see:

The command '/bin/sh -c eval ssh-agent -s && ssh-add /root/.ssh/id_rsa' returned a non-zero code: 1

but the docker build continues until it reaches the ENTRYPOINT and then exits. How can I get the docker build process to stop if one of the RUN commands exits with non-zero?

回答1:

Docker don't connect the different parts of your run command as an logical AND. It is more like a OR

Do this:

RUN eval `ssh-agent -s` 
RUN ssh-add /root/.ssh/id_rsa

---

TL;DR: A short example why:

This works until the end:

FROM alpine
RUN exit 0
RUN echo Hello

This stops by the first RUN:

FROM alpine
RUN exit 1
RUN echo Hello

This run until the end (like your example):

FROM alpine
RUN exit 0 && exit 1
RUN echo Hello

来源：https://stackoverflow.com/questions/55940444/docker-build-is-not-stopping-on-failed-run-command