feat: add scratch node image build step

.github/workflows/build_and_push_image.yml

@@ -25,10 +25,19 @@ jobs:
           username: ${{ github.repository_owner }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
-      - name: Build and push
+      - name: Build and push fork image
         uses: docker/[email protected]
         with:
           context: .
           platforms: linux/amd64,linux/arm64
           push: true
           tags: ghcr.io/lidofinance/hardhat-node:${{ github.ref_name }}
+
+      - name: Build and push scratch image
+        uses: docker/[email protected]
+        with:
+          context: .
+          file: scratch.Dockerfile
+          platforms: linux/amd64,linux/arm64
+          push: true
+          tags: ghcr.io/lidofinance/hardhat-node:${{ github.ref_name }}-scratch

hardhat.config.scratch.ts

@@ -0,0 +1,17 @@
+import "dotenv/config";
+import { HardhatUserConfig } from "hardhat/config";
+import "@nomicfoundation/hardhat-ethers";
+
+const config: HardhatUserConfig = {
+  solidity: "0.8.23",
+  networks: {
+    hardhat: {
+      initialBaseFeePerGas: 0,
+      accounts: {
+        count: 10,
+      },
+      chainId: 1,
+    },
+  },
+};
+export default config;

scratch.Dockerfile

@@ -0,0 +1,40 @@
+# syntax=docker/dockerfile:1
+
+# Comments are provided throughout this file to help you get started.
+# If you need more help, visit the Dockerfile reference guide at
+# https://docs.docker.com/go/dockerfile-reference/
+
+# Want to help us make this template better? Share your feedback here: https://forms.gle/ybq9Krt8jtBL3iCk7
+
+ARG NODE_VERSION=lts
+ARG PNPM_VERSION=9.11.0
+
+FROM node:${NODE_VERSION}-alpine
+
+# Use production node environment by default.
+ENV NODE_ENV=production
+
+# Install pnpm.
+RUN --mount=type=cache,target=/root/.npm \
+    npm install -g pnpm@${PNPM_VERSION}
+
+WORKDIR /usr/src/app
+
+# Download dependencies as a separate step to take advantage of Docker's caching.
+# Leverage a cache mount to /root/.local/share/pnpm/store to speed up subsequent builds.
+# Leverage a bind mounts to package.json and pnpm-lock.yaml to avoid having to copy them into
+# into this layer.
+RUN --mount=type=bind,source=package.json,target=package.json \
+    --mount=type=bind,source=pnpm-lock.yaml,target=pnpm-lock.yaml \
+    --mount=type=cache,target=/root/.local/share/pnpm/store \
+    pnpm install --prod --frozen-lockfile
+
+# Copy the rest of the source files into the image.
+COPY . .
+COPY hardhat.config.scratch.ts hardhat.config.ts
+
+# Expose the port that the application listens on.
+EXPOSE 8545
+
+# Run the application.
+CMD ["pnpm", "start"]