Add "build and push ci-alpine-amd64:latest" to push.yml

Signed-off-by: Ganyu (Bruce) Xu <[email protected]>

Author: xuganyu96

.github/workflows/build.yml

@@ -38,7 +38,7 @@ jobs:
     steps:
       - name: Checkout code
         uses: actions/checkout@v4
-      - name: Build image
+      - name: Build ci-alpine-amd64:latest, do not push
         uses: docker/build-push-action@v6
         with:
           push: false

.github/workflows/push.yml

@@ -5,6 +5,25 @@ on:
     branches: 'main'
 
 jobs:
+  alpine-amd64:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+      - name: Login to Docker Hub
+        if: github.ref_name == 'main'
+        uses: docker/login-action@v3
+        with:
+          username: ${{ vars.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+      - name: Build and push ci-alpine-amd64:latest
+        uses: docker/build-push-action@v6
+        with:
+          push: true
+          build-args: ARCH=amd64
+          tags: openquantumsafe/ci-alpine-amd64:latest
+          context: alpine
+
   ubuntu-arm64:
     strategy:
       matrix: