Merge #2491

2491: Improve Docker CIs r=curquiza a=curquiza

Close #1901 

Continuing work of 

- [x] Merge two docker CI in one (#2477). The latest tag is still only push for the official release.
- [x] Add cron job in GHA to run the CI (without publishing the image) every day. This will check the docker build is working.

Co-authored-by: Lawrence Chou <lawrencechou1024@gmail.com>
Co-authored-by: Clémentine Urquizar - curqui <clementine@meilisearch.com>
Co-authored-by: Clémentine Urquizar <clementine@meilisearch.com>

.github/workflows/publish-docker-images.yml

@@ -1,13 +1,17 @@
 ---
 on:
+  schedule:
+    - cron: '0 4 * * *' # Every day at 4:00am
   push:
     tags:
       - '*'
+  release:
+    types: [released]
 
-name: Publish tagged image to Docker Hub
+name: Publish tagged images to Docker Hub
 
 jobs:
-  docker-tag:
+  docker:
     runs-on: docker
     steps:
       - name: Set up QEMU
@@ -17,6 +21,7 @@ jobs:
         uses: docker/setup-buildx-action@v1
 
       - name: Login to DockerHub
+        if: github.event_name != 'schedule'
         uses: docker/login-action@v1
         with:
           username: ${{ secrets.DOCKER_USERNAME }}
@@ -27,13 +32,18 @@ jobs:
         uses: docker/metadata-action@v3
         with:
           images: getmeili/meilisearch
+          # The lastest tag is only pushed for the official Meilisearch release
+          # See https://github.com/docker/metadata-action#latest-tag
           flavor: latest=false
-          tags: type=ref,event=tag
+          tags: |
+            type=ref,event=tag
+            type=raw,value=latest,enable=${{ github.event_name == 'release' }}
 
       - name: Build and push
         id: docker_build
         uses: docker/build-push-action@v2
         with:
-          push: true
+          # We do not push tags for the cron jobs, this is only for test purposes
+          push: ${{ github.event_name != 'schedule' }}
           platforms: linux/amd64,linux/arm64
           tags: ${{ steps.meta.outputs.tags }}

.github/workflows/publish-docker-latest.yml

@@ -1,30 +0,0 @@
----
-on:
-  release:
-    types: [released]
-
-name: Publish latest image to Docker Hub
-
-jobs:
-  docker-latest:
-    runs-on: docker
-    steps:
-      - name: Set up QEMU
-        uses: docker/setup-qemu-action@v1
-
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v1
-
-      - name: Login to DockerHub
-        uses: docker/login-action@v1
-        with:
-          username: ${{ secrets.DOCKER_USERNAME }}
-          password: ${{ secrets.DOCKER_PASSWORD }}
-
-      - name: Build and push
-        id: docker_build
-        uses: docker/build-push-action@v2
-        with:
-          push: true
-          platforms: linux/amd64,linux/arm64
-          tags: getmeili/meilisearch:latest