get tag from manual input

.github/workflows/actions.yml

@@ -4,6 +4,11 @@ on:
     push:
         branches:
             - main
+    workflow_dispatch:
+        inputs:
+            tag:
+                description: 'Custom input for tags'
+                required: false
 
 jobs:
     test:
@@ -23,12 +28,13 @@ jobs:
         steps:
             - name: Set image tag
               run: |
-                  COMMIT_MSG="${{ github.event.head_commit.message }}"
-                  if [[ "$COMMIT_MSG" == "[TAG]"*  ]]; then
-                    TAG=$(echo $COMMIT_MSG | grep -oP '(?<=\[TAG\])\S+')
-                    echo "TAG=$TAG" >> $GITHUB_ENV
-                    echo "TAG: $TAG"                
-              #source: https://chatgpt.com/share/66fe5874-6410-8009-ab95-d2fe9956a708
+                  if [[ ${{inputs.tag}} == '' ]]; then
+                      echo "TAG is not provided, using latest"
+                      echo "TAG=latest" >> $GITHUB_ENV
+                  else
+                      echo "TAG is provided, using ${{inputs.tag}}"
+                      echo "TAG=${{inputs.tag}}" >> $GITHUB_ENV
+                  fi
 
             - name: Login to Docker Hub
               uses: docker/login-action@v3