Replace single step in bitbucket pipeline - bitbucket-pipelines

Question

I am trying to build rather complex Bitbucket Pipeline while following dry principles.
So far I defined multiple custom steps in definitions section:
definitions:
steps:
- step: &foo
name: foo
script:
...
- step: &bar
name: bar
script:
...
Now, I have two custom pipelines that are almost identical except for one artifact/variable.
pipelines:
custom:
action-a:
- step:
name: action a
script:
- echo "1" > .value
artifacts:
- .value
- step: *bar
- step: *foo
action-b:
- step:
name: action b
script:
- echo "2" > .value
artifacts:
- .value
- step: *bar
- step: *foo
Everything after step generating .value artifact is identical (and way more complex than just 2 steps). Would it be possible to define a single pipeline and somehow inject this artifact with anchors?

Answer 1

With bitbucket pipelines, you can now use Deployment Variables.
These are found at Repository Settings > Deployments
You can create a step
- step: &foo
name: Deployment Step
script:
- echo ${DEPLOYMENT_VAR}
Then in your pipelines definition, call that step and pass in your deployment name, here's an example using branch specific deployments.
pipelines:
branches:
develop:
- step:
<<: *foo
name: 'foo (develop)'
deployment: foo-dev
main:
- step:
<<: *foo
name: 'foo (main)'
deployment: foo-main
Then if your Deployment Settings look like this:
When pushing to the develop branch, your pipeline step would echo dev and your main branch would echo main
see: https://support.atlassian.com/bitbucket-cloud/docs/variables-and-secrets/#:~:text=override%20team%20variables.-,Deployment%20variables,-You%20can%20also