use cargo-chef

.github/workflows/cd.yml

@@ -150,7 +150,7 @@ jobs:
           context: .
           tags: achristmascarl/rainfrog:latest,achristmascarl/rainfrog:${{ github.ref_name }}
           cache-from: type=gha
-          cache-to: type=gha,mode=max`
+          cache-to: type=gha,mode=max
 
   publish-cargo:
     name: Publishing to Cargo

.github/workflows/ci.yml

@@ -61,9 +61,17 @@ jobs:
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
-      - name: build docker image
-        run: |
-          docker build . -t rainfrog_test
+      - name: Set up Docker CLI
+        uses: docker/setup-buildx-action@v3
+      - name: Build Docker image
+        uses: docker/build-push-action@v5
+        with:
+          push: false
+          context: .
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+          tags: rainfrog_test
+          outputs: type=docker
       - name: init db for docker test
         run: |
           make db-up

Dockerfile

@@ -1,9 +1,16 @@
-FROM rust:alpine3.20 AS builder
+FROM lukemathwalker/cargo-chef:latest-rust-1 AS chef
 WORKDIR /app
 
-# Install system dependencies
-RUN apk add --no-cache musl-dev=1.2.5-r0
+# Cache dependencies
+FROM chef AS planner
+COPY . .
+RUN cargo chef prepare --recipe-path recipe.json
 
+# Build application
+FROM chef AS builder 
+COPY --from=planner /app/recipe.json recipe.json
+# Build dependencies - this is the caching Docker layer!
+RUN cargo chef cook --release --recipe-path recipe.json
 # Build application
 COPY . .
 RUN cargo build --release