Docker compose: Invalid interpolation format for "environment" option in service

Question

Hi in docker compose I have:

 environment:
      - AWS_ACCESS_KEY_ID=$(aws --profile default configure get aws_access_key_id)
      - AWS_SECRET_ACCESS_KEY=$(aws --profile default configure get aws_secret_access_key)

But it returns me an error like in topic. Anyone knows how to pass those variables ?

Thanks

Possible duplicate of [How can I escape a $ dollar sign in a docker compose file?](https://stackoverflow.com/questions/40619582/how-can-i-escape-a-dollar-sign-in-a-docker-compose-file) — kenorb, Feb 16 '19 at 13:45

score 55 · Answer 1 · answered Oct 27 '20 at 20:30

55

For anyone getting this error while trying to pass the DJANGO Secret Key, if your secret key contains '$' add another '$ after it'

DJANGO_SECRET_KEY: "tj...........t2$8" # Original Key
DJANGO_SECRET_KEY: "tj...........t2$$8"

answered Oct 27 '20 at 20:30

tomscoding

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Nicola Ben · Answer 2 · 2018-04-18T12:35:34.117

11

Try with an ENV file.

$ cat ./Docker/api/api.env
NODE_ENV=test

$ cat docker-compose.yml
version: '3'
services:
  api:
    image: 'node:6-alpine'
    env_file:
     - ./Docker/api/api.env
    environment:
     - NODE_ENV=production

You can escape the $ symbol with another $ [like this $$() ] Reference at: https://docs.docker.com/compose/environment-variables/#the-env-file

edited Apr 18 '18 at 12:35

answered Apr 18 '18 at 10:43

Nicola Ben

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This does not address the specific problem, which is that they're trying to assign an ENV variable based on the results of a command. – Kaia Leahy Oct 01 '19 at 11:01

score 8 · Answer 3 · edited Sep 11 '18 at 00:15

If the aws command line utility is embedded inside the container then you can rewrite the commands like this.

environment:
  - AWS_ACCESS_KEY_ID=$$(aws --profile default configure get aws_access_key_id)
  - AWS_SECRET_ACCESS_KEY=$$(aws --profile default configure get aws_secret_access_key)

And if this aws utility is on the host system then
you can set some environment variables on your shell like (.profile or .bashrc etc)

export HOST_ACCESS_KEY_ID=$(aws --profile default configure get aws_access_key_id)
export HOST_AWS_SECRET_ACCESS_KEY=$(aws --profile default configure get aws_secret_access_key)

and then reuse it in docker-compose.yml like

environment:
  - AWS_ACCESS_KEY_ID=${HOST_ACCESS_KEY_ID}
  - AWS_SECRET_ACCESS_KEY=${HOST_AWS_SECRET_ACCESS_KEY}

score 4 · Answer 4 · answered Apr 18 '18 at 10:57

AFAIK it is not possible to do this in docker-compose or .env files. But you can set an environment variable and reference that one in your docker-compose file:

$ export AWS_ACCESS_KEY_ID=$(aws --profile default configure get aws_access_key_id)

docker-compose.yaml

environment:
      - AWS_ACCESS_KEY_ID=${AWS_ACCESS_KEY_ID}

score 4 · Answer 5 · answered May 15 '20 at 03:06

4

My issue was caused by the fact, that I had been using v2 of docker-file, whereas such an environment option needed to have defined in the header version 3, instead of 2

version: "3"

answered May 15 '20 at 03:06

FantomX1

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Docker compose: Invalid interpolation format for "environment" option in service

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