add sha_short as tag of the images

action.yml

@@ -22,8 +22,11 @@ runs:
   steps:
     - uses: actions/checkout@v5
       with:
-        fetch-depth: 0  # required to see all branches
+        fetch-depth: 0
 
+    - name: get commit hash 
+      id: get_hash
+      run: echo "sha_short=$(git rev-parse --short HEAD)" >> $GITHUB_OUTPUT
 
     - name: Set up Docker Buildx
       uses: docker/setup-buildx-action@v2
@@ -40,13 +43,13 @@ runs:
       with:
         context: "{{defaultContext}}:${{ input.path }}"
         push: true
-        tags: git.tmoron.fr/${{ inputs.name }}:latest
+        tags: git.tmoron.fr/${{ inputs.name }}:${{ steps.get_hash.outputs.sha_short }}
 
     - name: push to latest branch
       run: | 
         if git ls-remote --exit-code --heads origin latest; then
             git switch latest
-            git merge latest
+            git merge master 
         else
             git checkout -b latest
         fi