Fix default version/tag

Author: Layoric

.github/workflows/release.yml

@@ -34,10 +34,16 @@ jobs:
         uses: actions/checkout@v2
         with:
           ref: refs/tags/${{ github.event.inputs.version }}
-          
+
+      - name: Setup dotnet
+        uses: actions/setup-dotnet@v1
+        with:
+          dotnet-version: '6.0'
+
+      # Assign environment variables used in subsequent steps
       - name: repository name fix
         run: echo "image_repository_name=$(echo ${{ github.repository }} | tr '[:upper:]' '[:lower:]')" >> $GITHUB_ENV
-
+      # TAG_NAME defaults to 'latest' if not a release or manual deployment
       - name: Assign version
         run: |
           echo "TAG_NAME=latest" >> $GITHUB_ENV
@@ -71,7 +77,6 @@ jobs:
     runs-on: ubuntu-20.04
     if: ${{ github.event.workflow_run.conclusion != 'failure' }}
     steps:
-      # Checkout latest or specific tag
       - name: checkout
         if: ${{ github.event.inputs.version == '' || github.event.inputs.version == 'latest' }}
         uses: actions/checkout@v2
@@ -92,13 +97,12 @@ jobs:
           if [ "${{ github.event.inputs.version }}" != "" ]; then
             echo "TAG_NAME=${{ github.event.inputs.version }}" >> $GITHUB_ENV
           fi;
-
       - name: docker-compose file prep
         uses: danielr1996/envsubst-action@1.0.0
         env:
-          APP_NAME: ${{ github.event.repository.name }}
-          RELEASE_VERSION: ${{ github.event.release.tag_name }}
+          RELEASE_VERSION: ${{ env.TAG_NAME }}
           IMAGE_REPO: ${{ env.image_repository_name }}
+          APP_NAME: ${{ github.event.repository.name }}
           HOST_DOMAIN: ${{ secrets.DEPLOY_API }}
           LETSENCRYPT_EMAIL: ${{ secrets.LETSENCRYPT_EMAIL }}
         with: