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User defined Variable that references another variable

I have a pipeline with a service that needs to point it's url to the BITBUCKET_DOCKER_HOST_INTERNAL ip address so it can communicate with a database. The value of the variable needs to be set to a postgres url, I don't own this service and it doesn't look like I can split up the value into multiple variables. How would I define a variable for this in my service?


I've tried 

 DSN: "postgres://***:***@$BITBUCKET_DOCKER_HOST_INTERNAL:5432/***"


DSN: "postgres://***:***@${BITBUCKET_DOCKER_HOST_INTERNAL}:5432/***"


1 answer

Hi @Jordan Davidson ,

welcome to the Atlassian community.

If I correctly grasp your question, this might be it:

If you need to communicate from a service running in docker to a service running in your build container, when starting the service provide it the following host entry using --add-host host.docker.internal:$BITBUCKET_DOCKER_HOST_INTERNAL you can then access the service using host.docker.internal:<port>.

As variable substitution does not work for service variables, this allows to replace the variable with the hostname (here: "host.docker.internal"):

 DSN: "postgres://***:***@host.docker.internal:5432/***"

If I didn't fully understood your scenario so far, please share and also find more information in the reference/source:

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