CODEWITHSUNDEEP
dockerdockerfile
matteo
matteo

Reputation: 319

Source environment file not working in docker

I have this line in a Dockerfile

RUN /bin/bash -c ". setup.sh ; echo $LD_LIBRARY_PATH ; make"

LD_LIBRARY_PATH is set in setup.sh. However, when I run docker build . the echo instruction just prints an empty string, and make gives an error for a library not found.

From many answers found here in Stackoverflow and elsewhere, I would expect the path to be printed out.

What am I missing? Thanks in advance

Upvotes: 0

Views: 929

Answers (1)

BMitch
BMitch

Reputation: 264701

In a Dockerfile, the line:

RUN /bin/bash -c ". setup.sh ; echo $LD_LIBRARY_PATH ; make"

will result in the $LD_LIBRARY_PATH variable being expanded by docker itself (you can set that variable with an ARG or ENV line). To get the variable to be expanded by the shell inside your container, simply escape it with a backslash:

RUN /bin/bash -c ". setup.sh ; echo \$LD_LIBRARY_PATH ; make"

Upvotes: 1

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