build & publish docker image to github packages.

.github/Dockerfile

@@ -0,0 +1,10 @@
+FROM ghcr.io/readon/spinalhdl:master
+
+ARG JAVA_EXTRA_OPTS="-Xmx2g -Xms2g"
+ENV JAVA_OPTS="${JAVA_OPTS} ${JAVA_EXTRA_OPTS}"
+RUN git clone https://github.com/SpinalHDL/SpinalTemplateSbt.git && \ 
+    cd SpinalTemplateSbt && \
+    git submodule update --init --recursive && \
+    sbt compile && \
+    mill _.compile && \
+    cd .. && rm -rf SpinalTemplateSbt

.github/workflows/docker.yml

@@ -0,0 +1,43 @@
+name: Build and Push Docker Image
+
+on:
+  push:
+    branches:
+      - master
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - name: Check out the repo
+        uses: actions/checkout@v2
+
+      - name: Log in to the Container registry
+        uses: docker/login-action@v1
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Docker meta
+        id: meta
+        uses: docker/metadata-action@v4
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v4
+        with:
+          context: .
+          file: .github/Dockerfile
+          push: true
+          labels: ${{ steps.meta.outputs.labels }}
+          tags: ${{ steps.meta.outputs.tags }}

.mill-version

@@ -1 +1 @@
-0.9.8
+0.10.9