Automated documentation.yml running on git tag

For release and playtest tags.

.github/workflows/documentation.yml

@@ -1,6 +1,8 @@
 name: Deploy Documentation
 
 on:
+  push:
+    tags: [ 'release-*', 'playtest-*' ]
   workflow_dispatch:
     inputs:
       tag:
@@ -70,9 +72,15 @@ jobs:
     steps:
       - name: Prepare environment variables
         run: |
-          VERSION=`echo "${{ github.event.inputs.tag }}" | cut -d"-" -f1`
+          if [ "${{ github.event_name }}" = "push" ]; then
-          echo "GIT_TAG=${{ github.event.inputs.tag }}" >> $GITHUB_ENV
+            VERSION=`echo "${GITHUB_REF#refs/tags/}" | cut -d"-" -f1`
-          echo "VERSION=$VERSION" >> $GITHUB_ENV
+            echo "GIT_TAG=${GITHUB_REF#refs/tags/}" >> $GITHUB_ENV
+            echo "VERSION=$VERSION" >> $GITHUB_ENV
+          else
+            VERSION=`echo "${{ github.event.inputs.tag }}" | cut -d"-" -f1`
+            echo "GIT_TAG=${{ github.event.inputs.tag }}" >> $GITHUB_ENV
+            echo "VERSION=$VERSION" >> $GITHUB_ENV
+          fi
 
       - name: Clone Repository
         uses: actions/checkout@v3