Try different var syntax

.github/workflows/github_server.yml

@@ -33,20 +33,20 @@ jobs:
       SECRET_VAR1: secret-var1-value
       SECRET_VAR2: secret-var2-value
       SECRET_FOR_MISSING_FIELD: secret for missing field
+      BRANCH: ${{ github.ref }}
 
     steps:
-      - run: echo "tags are ${{ github.event.inputs.tags }}"
       - uses: actions/checkout@v3
       - name: Setup tmate session
-        if: ${{ inputs.enable_tmate == "true" }}
+        if: ${{ inputs.enable_tmate }}
         uses: mxschmitt/action-tmate@v3
         with:
           detached: true
       - name: Start the temporary GitHub server
         id: github_server
         # TODO: Research how to get this to always be the same branch we're on
         # Would ${{ ref or whatever }} work?
-        uses: SuffolkLITLab/ALKiln/github_server@${{ github.ref }}
+        uses: SuffolkLITLab/ALKiln/github_server@$BRANCH
         with:
           CONFIG_CONTENTS: "${{ secrets.CONFIG_CONTENTS }}"
           #
@@ -55,7 +55,7 @@ jobs:
         if: ${{ success() }}
         # TODO: Research how to get this to always be the same branch we're on
         # Would ${{ ref or whatever }} work?
-        uses: SuffolkLITLab/ALKiln@${{ github.ref }}
+        uses: SuffolkLITLab/ALKiln@$BRANCH
         with:
           SERVER_URL: "${{ steps.github_server.outputs.SERVER_URL }}"
           DOCASSEMBLE_DEVELOPER_API_KEY: "${{ steps.github_server.outputs.DOCASSEMBLE_DEVELOPER_API_KEY }}"