Add cross-build Dockerfile and DockerHub publish action

.github/workflows/docker_crossbuild_publish.yml

@@ -0,0 +1,67 @@
+name: Cross-Compile Docker Build and Push
+
+on:
+  pull_request:
+    types:
+      - opened
+      - synchronize
+      - closed
+
+jobs:
+ build:
+   runs-on: ubuntu-latest
+   strategy:
+     matrix:
+       include:
+         - platform: 'linux/amd64'
+           ccarch: 'x86_64'
+         - platform: 'linux/arm64'
+           ccarch: 'aarch64'
+
+   steps:
+     - name: Checkout code
+       uses: actions/checkout@v3
+
+     - name: Set up Docker Buildx
+       uses: docker/setup-buildx-action@v1
+
+     - name: Generate Docker metadata
+       id: metadata
+       uses: docker/metadata-action@v3
+       with:
+         images: greenden/oracle-core
+         tags: |
+           type=ref,event=tag
+     - name: Build images
+       uses: docker/build-push-action@v3
+       with:
+         context: .
+         platforms: ${{ matrix.platform }}
+         tags: ${{ steps.metadata.outputs.tags }}
+         build-args: |
+           TARGETPLATFORM=${{ matrix.platform }}
+           CCARCH=${{ matrix.ccarch }}
+         push: false
+         load: true
+
+ push:
+   needs: build
+   runs-on: ubuntu-latest
+   steps:
+     - name: Set up Docker Buildx
+       uses: docker/setup-buildx-action@v1
+
+     - name: Login to DockerHub
+       uses: docker/login-action@v2
+       with:
+         username: ${{ secrets.DOCKERHUB_USERNAME }}
+         password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+     - name: Combine and Push to DockerHub
+       uses: docker/build-push-action@v3
+       with:
+         context: .
+         platforms: linux/amd64,linux/arm64
+         tags: greenden/oracle-core:${{ github.ref_name }}, greenden/oracle-core:latest
+         push: true
+

Dockerfile

@@ -0,0 +1,34 @@
+# Valid CCARCH options: aarch64 or the default x86_64 
+ARG CCARCH="x86_64"
+
+FROM --platform=$BUILDPLATFORM messense/rust-musl-cross:${CCARCH}-musl AS builder
+WORKDIR /home/rust/src
+COPY . .
+
+RUN rm rust-toolchain
+
+RUN cargo build --release
+
+RUN apt-get update && apt-get --only-upgrade install -y ca-certificates
+RUN update-ca-certificates
+
+RUN adduser \
+    --disabled-password \
+    --gecos "oracle-core" \
+    --home "/data" \
+    --shell "/bin/sh" \
+    --no-create-home \
+    --uid "9010" \
+    oracle-core
+
+FROM --platform=$TARGETPLATFORM busybox:stable-musl AS final
+ARG CCARCH="x86_64"
+COPY --from=builder /home/rust/src/target/${CCARCH}-unknown-linux-musl/release/oracle-core /usr/local/bin/oracle-core
+COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
+COPY --from=builder /etc/passwd /etc/passwd
+
+EXPOSE 9010 9011
+
+USER oracle-core
+
+CMD ["oracle-core", "--oracle-config-file", "/data/oracle_config.yaml", "--pool-config-file", "/data/pool_config.yaml", "-d", "/data", "run", "--enable-rest-api"]

README.md

@@ -16,6 +16,29 @@ The current oracle core is built to run the protocol specified in the [EIP-0023
 
 ## Getting started
 
+### Docker Image
+
+AMD64 and ARM64 images are available from [Docker Hub Repo](https://hub.docker.com/r/ergoplatform/oracle-core)
+
+The container runs under oracle-core user ( 9010 uid ), if using bind mount for container's /data folder ( where config files and other data lives ), set the container's uid for the host's folder ownership ( ex: chown -R 9010:9010 oracle_data ).
+
+An example docker run command:
+
+``` console
+docker run -d \
+ -v /path/on/host:/data \
+ -p 9010:9010 \
+ -p 9011:9011 \
+ -e ORACLE_NODE_API_KEY=CHANGE_ME_KEY \
+ ergoplatform/oracle-core:latest
+```
+
+To enter container shell for debugging or pool modifications:
+
+``` console
+docker exec -it -u oracle-core <container id> /bin/sh
+```
+
 ### Download
 
 Get the latest release binary from [Releases](https://github.com/ergoplatform/oracle-core/releases)

rust-toolchain

@@ -1 +1 @@
-1.66.1
+1.71.1