CODEWITHSUNDEEP
dockerdockerfile
SAK
SAK

Reputation: 25428

Setting environment in Dockerfile not reflecting in docker exec

Having trouble with setting environment in docker.

My Dockerfile has the following line:

ENV abc=hello

I build the docker image using:

 docker image build --no-cache -t foobar .

Run the container in daemon mode:

 docker run -it -d foobar

Run docker container ls, find the container name and run:

docker exec -it suspicious_poincare echo $abc

It doesn't print "hello". Why is that?

Upvotes: 1

Views: 461

Answers (2)

Nasantogtokh Amarsaikhan
Nasantogtokh Amarsaikhan

Reputation: 126

The command you're trying to run is Chained command thus first command is being executed by container and second one is being executed by your host machine. Therefore, like @heydar-dasoomi suggested, you need to run in inside quotes the commands. Please read the discussion of Docker repo from following link https://github.com/docker/for-linux/issues/119.

Upvotes: 0

heydar dasoomi
heydar dasoomi

Reputation: 557

Use this:

docker exec -it suspicious_poincare bash -c "echo \$abc"

If don't do this,it will echo environment from your host.

Upvotes: 4

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