use env vars in workflow

Author: ADOT Patch workflow

.github/workflows/release-lambda.yml

@@ -29,8 +29,10 @@ jobs:
     steps:
       - name: Set up regions matrix
         id: set-matrix
+        env:
+          AWS_REGIONS: ${{ github.event.inputs.aws_region }}
         run: |
-          IFS=',' read -ra REGIONS <<< "${{ github.event.inputs.aws_region }}"
+          IFS=',' read -ra REGIONS <<< "$AWS_REGIONS"
           MATRIX="["
           for region in "${REGIONS[@]}"; do
             trimmed_region=$(echo "$region" | xargs)
@@ -205,8 +207,11 @@ jobs:
         id: commit
         run: echo "sha_short=$(git rev-parse --short HEAD)" >> $GITHUB_OUTPUT
       - name: Create Release Notes
+        env:
+          VERSION: ${{ github.event.inputs.version }}
+          SHA_SHORT: ${{ steps.commit.outputs.sha_short }}
         run: |
-          echo "AWS OpenTelemetry Lambda Layer for Python version ${{ github.event.inputs.version }}-${{ steps.commit.outputs.sha_short }}" > release_notes.md
+          echo "AWS OpenTelemetry Lambda Layer for Python version ${VERSION}-${SHA_SHORT}" > release_notes.md
           echo "" >> release_notes.md
           echo "" >> release_notes.md
           echo "See new Lambda Layer ARNs:" >> release_notes.md
@@ -218,12 +223,14 @@ jobs:
         id: create_release
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} # This token is provided by Actions, you do not need to create your own token
+          VERSION: ${{ github.event.inputs.version }}
+          SHA_SHORT: ${{ steps.commit.outputs.sha_short }}
         run: |
           gh release create --target "$GITHUB_REF_NAME" \
-             --title "Release lambda-v${{ github.event.inputs.version }}-${{ steps.commit.outputs.sha_short }}" \
+             --title "Release lambda-v${VERSION}-${SHA_SHORT}" \
              --notes-file release_notes.md  \
              --draft \
-             "lambda-v${{ github.event.inputs.version }}-${{ steps.commit.outputs.sha_short }}" \
+             "lambda-v${VERSION}-${SHA_SHORT}" \
              layer_arns.tf layer.zip
           echo Removing release_notes.md ...
           rm -f release_notes.md