build: Use different dockerfiles for single and multi-arch builds

Dockerfile

@@ -0,0 +1,26 @@
+FROM lukemathwalker/cargo-chef:latest-rust-slim AS chef
+WORKDIR /chhoto-url
+
+FROM chef as planner
+COPY ./actix/Cargo.toml ./actix/Cargo.lock .
+COPY ./actix/src ./src
+RUN cargo chef prepare --recipe-path recipe.json
+
+FROM chef as builder
+RUN apt-get update && apt-get install -y musl-tools
+RUN rustup target add x86_64-unknown-linux-musl
+
+COPY --from=planner /chhoto-url/recipe.json recipe.json
+# Build dependencies - this is the caching Docker layer
+RUN cargo chef cook --release --target=x86_64-unknown-linux-musl --recipe-path recipe.json
+
+COPY ./actix/Cargo.toml ./actix/Cargo.lock .
+COPY ./actix/src ./src
+# Build application
+RUN cargo build --release --target=x86_64-unknown-linux-musl --locked --bin chhoto-url
+
+FROM scratch
+COPY --from=builder /chhoto-url/target/x86_64-unknown-linux-musl/release/chhoto-url /chhoto-url
+COPY ./resources /resources
+ENTRYPOINT ["/chhoto-url"]
+

Makefile

@@ -9,7 +9,7 @@ build:
 	cross build --release --locked --manifest-path=actix/Cargo.toml --target x86_64-unknown-linux-musl
 
 docker: build
-	docker buildx build --push --tag sintan1729/chhoto-url:dev --platform linux/amd64,linux/arm64,linux/arm/v7 .
+	docker buildx build --push --tag sintan1729/chhoto-url:dev --platform linux/amd64,linux/arm64,linux/arm/v7 -f Dockerfile.multiarch .
 
 clean:
 	cargo clean --manifest-path=actix/Cargo.toml