PRE_COMMANDS: Invalid interpolation format for "environment" option in service

[Altiano]

Why this value won't work?

PRE_COMMANDS: |-
            docker stop reverse_proxy
            docker stop $(docker ps | grep blogcomments | awk '{print $1}') 
            docker stop $(docker ps | grep mailcowdockerized | awk '{print $1}') 

[djmaze]

So what exactly is the error message? Is it an error given by docker-compose during parsing?

[Altiano]

The error message: PRE_COMMANDS: Invalid interpolation format for "environment" option in service

[djmaze]

Ah, right, I see ;)

Well, using advanced shell syntax in the PRE_COMMANDS or POST_COMMANDS variables probably won't work because it is just evaled inside the main script. I suggest putting those lines into a separate script file, mount that into the container and then just call the script in the PRE_COMMANDS.

[alexmisk]

Hеу! Sorry for necroposting, but I've just faced almost the same issue.

Try to double the $ sign in your PRE_COMMANDS like this:

PRE_COMMANDS: |-
            docker stop reverse_proxy
            docker stop $$(docker ps | grep blogcomments | awk '{print $$1}') 
            docker stop $$(docker ps | grep mailcowdockerized | awk '{print $$1}')