Passing arguments to python script that is run from "command" in docker-compose.yml

Docker Hub
1

I have 2 python scripts which I am planning to make images of and run them as containers. My docker-compose looks like

version: “2”

services:

publisher1:
  build: pub1
    args:
     - NUMMESSAGE: 10
     - INTERVAL: 0.2
     - MESSAGE: "HelloWorld1"
  command: ["python", "-u", "./publisher1.py"]
  ports:
    - "1234"

publisher2:
  build: pub2
    args:
      - NUMMESSAGE: 20
      - INTERVAL: 0.2
      - MESSAGE: "HelloWorld2"
  command: ["python", "-u", "./publisher2.py"]
  ports:
    - "2222"

Respective Dockerfile(s) do have these arguments mentioned as ARG …

If I indent “args” in docker-compose.yml under “build”, it gives me an error yaml.scanner.ScannerError: mapping values are not allowed here

I did check the space after “args:”, it exists. Still I get the above error.

Also, if I do not indent “args” under “build”, I get the error “unsupported config option for services.publisher1: args”

Migrating the “version” to latest or next, doesn’t help.

Any help will be appreciated.

Thanks,
Sakar

2

hey
this error occurs when you are using wrong format to write the compose file
SO please check the format is correct.
please read below link for more