Allow both manual and auto tag name

Author: drojf

.github/workflows/build.yml

@@ -7,6 +7,9 @@ on:
     branches:
       - main
 
+env:
+  TAG_NAME: ${{ github.ref }}
+
 # Docs on sharing data between jobs (between VMs): https://help.github.com/en/actions/configuring-and-managing-workflows/persisting-workflow-data-using-artifacts#passing-data-between-jobs-in-a-workflow
 jobs:
   json_build:
@@ -22,16 +25,18 @@ jobs:
       - name: Run Build and Deploy Script
         run: python build.py
 
-      - name: Set current date as env variable
-        run: echo "NOW=$(date +'%Y-%m-%d_%H-%M-%S')" >> $GITHUB_ENV
+      # If the ref is a commit (anything not a tag), generate a tag name using the date
+      - name: Set current date as tag name
+        run: echo "TAG_NAME=$(date +'%Y-%m-%d_%H-%M-%S')" >> $GITHUB_ENV
+        if: github.ref_type != 'tag'
 
       # Note: need to keep *.json files for compatability with older installers
       # Can be removed once it is unlikely people are using the old installer
       - name: Release
         uses: softprops/action-gh-release@v1
         #if: startsWith(github.ref, 'refs/tags/') # only publish tagged commits
         with:
-          tag_name: ${{ env.NOW }}
+          tag_name: ${{ env.TAG_NAME }}
           files: |
             *.json
             *.zip