Update build_push.yaml: deprecate set-output (#491)

* Update build_push.yaml: deprecate set-output

update workflow to use $GITHUB_OUTPUT instead of set-output.

See: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

* Update build_push.yaml: update syntax

* Update build_push.yaml: update syntax for interpolation

* Update build_push.yaml: change notebook name variable name

* update remaining set-output commands

* Update Makefile: reset set-output commands for Makefile

Github Actions was complaining about set-output in the Makefile but I think we have to leave these lines alone since they are used by Make and not by Github Actions.

.github/workflows/build_push.yaml

@@ -110,7 +110,7 @@ jobs:
       id: notebook-name
       shell: bash
       run: |
-        echo ::set-output name=NOTEBOOK_NAME::${{ matrix.notebook }}
+        echo NOTEBOOK_NAME=${{ matrix.notebook }} >> $GITHUB_OUTPUT
 
     # Connect to Azure Container registry (ACR)
     - uses: azure/docker-login@v1
@@ -183,7 +183,7 @@ jobs:
           github.event_name == 'pull_request' &&
           contains( github.event.pull_request.labels.*.name, 'auto-deploy')
         )
-      run: echo "::set-output name=boolean::true"
+      run: echo 'boolean=true' >> $GITHUB_OUTPUT
 
     # Pull the local image back, then "build" it (will just tag the pulled image)
     - name: Pull image back from local repo

make_helpers/get_branch_name.sh

@@ -21,7 +21,6 @@ if [[ $GITHUB_ACTIONS == "true" ]] ; then
 		BRANCH_NAME=""
 	fi
 
-	# echo "::set-output name=branch_name::$BRANCH_NAME"
 else
 	BRANCH_NAME=`git rev-parse --abbrev-ref HEAD`
 fi