dockerfile instruction for running script from temporary location

[accursoft]

My Dockerfile runs several temporary scripts in the container, and thus looks like:

COPY script1 /tmp/
RUN /tmp/script1

COPY script2 /tmp/
RUN /tmp/script2

COPY script3 /tmp/
RUN /tmp/script3

COPY script4 /tmp/
RUN /tmp/script4

COPY script5 /tmp/
RUN /tmp/script5

RUN rm /tmp/script*

I would like a single instruction which copies a script into the container, executes it, then removes it in a single layer. This would have a number of advantages:

1. Cleaner dockerfiles
2. Cleaner docker history
3. Faster builds, as committing layers is expensive on some platforms

[GordonTheTurtle]

Hi!

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[phemmer]

See #332 & #6906

[thaJeztah]

Yes, this looks like a duplicate of those (and some others), however, there's currently a "freeze" on the Dockerfile syntax, because the "builder" will moved out of the daemon and moved client side. After that has been done, we can look into improvements in this area. See https://github.com/docker/docker/blob/master/ROADMAP.md#22-dockerfile-syntax

I'm going to close this issue, because we cannot currently accept changes to the Dockerfile. Thanks for suggesting though!

[accursoft]

#332 & #6906 might fix 2., but they'll make 1. and probably 3. worse. They're addressing different problems.

[thaJeztah]

This looks like a more similar issue; #18184