问题
I am using RUN instruction within a Dockerfile
to install a rpm
RUN yum -y install samplerpm-2.3
However, I want to pass the value "2.3" as an argument. My RUN instruction should look something like:
RUN yum -y install samplerpm-$arg
where $arg=2.3
回答1:
You are looking for --build-arg
and the ARG
instruction. These are new as of Docker 1.9. Check out https://docs.docker.com/engine/reference/builder/#arg. This will allow you to add ARG arg
to the Dockerfile
and then build with docker build --build-arg arg=2.3 .
.
来源:https://stackoverflow.com/questions/34254200/how-to-pass-arguments-to-a-dockerfile