CODEWITHSUNDEEP
dockerdocker-composedockerfile
omnia
omnia

Reputation: 41

How to add $(…):$(...) in Docker Compose

I need to run the following commands in the docker-compose:

- '/var/run/docker.sock:/var/run/docker.sock'
- '$(which docker):$(which docker)'

I found a solution for such a format:

- ${DOCKER_PATH}:/usr/bin/docker:ro

But in my case, I need to run this format $(..):$(..),

Is there any simple solution from the docker-compose it solve the problem?

I tried this:

DOCKER_PATH=$(which docker) docker-compose up

volumes:
   - '/var/run/docker.sock:/var/run/docker.sock'
   - ${DOCKER_PATH}:/usr/bin/docker:ro

But I get error:

ERROR: Invalid bind mount spec "59f5e4fa06257c16a046ae7e5163401349f1c0bb394c881bcdf557a2f544811c:$(which:rw": Invalid volume destination path: '$(which' mount path must be absolute.

Upvotes: 4

Views: 262

Answers (1)

kontrollanten
kontrollanten

Reputation: 2819

The following doesn't work

DOCKER_PATH=$(which docker) docker-compose up

volumes:
   - '/var/run/docker.sock:/var/run/docker.sock'
   - ${DOCKER_PATH}:/usr/bin/docker:ro

Because variable substitution needs to be inside double quotes (single quotes wont work), like this

- "${DOCKER_PATH}:/usr/bin/docker:ro"

You can read more about it here: https://docs.docker.com/compose/compose-file/#variable-substitution

Upvotes: 1

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