chore(ci): build and push image (#1292)

.github/workflows/build_and_push_image.yml

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+# This workflow pushes new grpc da images on every new commit on main.
+#
+# ghcr.io/dymensionxyz/dymint:latest  
+# ghcr.io/dymensionxyz/dymint:{SHORT_SHA} 
+
+name: Push docker images
+on:
+    push:
+        branches:
+        - main
+
+permissions:
+    contents: read
+    packages: write
+
+jobs:
+    build-and-push:
+      runs-on: ubuntu-latest
+      steps:
+        - 
+          name: Check out the repo
+          uses: actions/checkout@v3
+        - 
+          name: Set up Docker Buildx
+          uses: docker/setup-buildx-action@v3
+        - name: Login to GitHub Container Registry
+          uses: docker/login-action@v3
+          with:
+            registry: ghcr.io
+            username: ${{ github.repository_owner }}
+            password: ${{ secrets.GITHUB_TOKEN }}
+        - name: Create Docker Image Tag for vN.x branch
+          run: |
+            SHORT_SHA=$(echo ${GITHUB_SHA} | cut -c1-8)
+            echo "DOCKER_IMAGE_TAG=${SHORT_SHA}" >> $GITHUB_ENV
+        - 
+          name: Build and push 
+          id: build_push_image
+          uses: docker/build-push-action@v3
+          with:
+            file: Dockerfile
+            context: .
+            push: true
+            platforms: linux/amd64
+            tags: |
+                ghcr.io/dymensionxyz/dymint:latest
+                ghcr.io/dymensionxyz/dymint:${{ env.DOCKER_IMAGE_TAG }}

Dockerfile

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+FROM golang:1.23.3-alpine3.19
+
+WORKDIR /app
+
+COPY . .
+
+WORKDIR /app/da/grpc/mockserv/cmd
+
+# Command to run the executable
+CMD ["go","run", "main.go"]