ci: 👷 add latest tag & fix pull request actions

.github/workflows/docker-image.yml

@@ -1,14 +1,18 @@
 name: Docker Image CI
 
 on:
-  schedule:
-    - cron: "0 10 * * *"
   push:
     branches:
-      - "**"
+      - "main"
+      - "next"
+      - "dev"
     tags:
-      - "v*.*.*"
+      - "v*"
-  workflow_dispatch:
+  pull_request:
+    branches:
+      - "main"
+      - "next"
+      - "dev"
 
 jobs:
   docker:
@@ -28,6 +32,7 @@ jobs:
             type=schedule
             type=ref,event=branch
             type=ref,event=pr
+            type=raw,value=latest,enable={{is_default_branch}}
             type=semver,pattern={{version}}
             type=semver,pattern={{major}}.{{minor}}
             type=semver,pattern={{major}}
@@ -37,11 +42,13 @@ jobs:
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v2
       - name: Login to Docker Hub
+        if: github.event_name != 'pull_request'
         uses: docker/login-action@v2
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
       - name: Login to Container registry
+        if: github.event_name != 'pull_request'
         uses: docker/login-action@v2
         with:
           registry: ghcr.io