ci: enable automatic deploy, fix build command

Author: Obnoxieux

.github/workflows/deploy_docker.yaml

@@ -1,9 +1,9 @@
 name: Deploy Production (Docker)
 
 on:
-#  push:
-#    branches:
-#      - main
+  push:
+    branches:
+      - main
   workflow_dispatch:
 
 jobs:
@@ -23,7 +23,7 @@ jobs:
 
       - name: Build and push Docker image
         run: |
-          docker build -t ${{ vars.DOCKER_IMAGE }} 
+          docker build -t ${{ vars.DOCKER_IMAGE }} .
           docker push ${{ vars.DOCKER_IMAGE }}
 
       - name: Trigger Portainer deployment