ci: dev/test blobstore image (#8431)

* ci: dev/test blobstore image

* chore: removed QEMU step

.github/workflows/build-devblobstore.yml

@@ -0,0 +1,47 @@
+name: Build Dev/Test Blobstore Docker Image
+
+on:
+  push:
+    branches:
+      - 'main'
+    paths:
+      - '.github/workflows/build-devblobstore.yml'
+
+  workflow_dispatch: 
+
+env:
+  MINIO_VERSION: latest
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+    - uses: actions/checkout@v4
+    
+    - 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.actor }}
+        password: ${{ secrets.GITHUB_TOKEN }}
+
+    - name: Docker Build & Push
+      uses: docker/build-push-action@v6
+      env:
+        DOCKER_BUILD_NO_SUMMARY: true
+      with:
+        context: .
+        file: docker/devblobstore.Dockerfile
+        platforms: linux/amd64,linux/arm64
+        push: true
+        build-args: MINIO_VERSION=${{ env.MINIO_VERSION }}
+        tags: |
+          ghcr.io/ietf-tools/datatracker-devblobstore:${{ env.MINIO_VERSION }}
+          ghcr.io/ietf-tools/datatracker-devblobstore:latest

docker/devblobstore.Dockerfile

@@ -0,0 +1,9 @@
+ARG MINIO_VERSION=latest
+FROM quay.io/minio/minio:${MINIO_VERSION}
+LABEL maintainer="IETF Tools Team <tools-discuss@ietf.org>"
+
+ENV MINIO_ROOT_USER=minio_root
+ENV MINIO_ROOT_PASSWORD=minio_pass
+ENV MINIO_DEFAULT_BUCKETS=defaultbucket
+
+CMD ["server", "--console-address", ":9001", "/data"]