update README and GitHub actions

Author: bnusunny

.cargo/config

@@ -1,2 +1,2 @@
 [target.x86_64-unknown-linux-musl]
-linker = "musl-gcc"
+linker = "x86_64-unknown-linux-musl-gcc"

.dockerignore

@@ -1,3 +1 @@
-examples
-target
-.cargo
+examples

.github/workflows/pipeline.yml

@@ -16,10 +16,17 @@ jobs:
 
     steps:
       - uses: actions/checkout@v2
-      - name: Install dependencies
-        run: rustup target add x86_64-unknown-linux-musl
-          && curl -o ./musl-1.2.2.tar.gz https://musl.libc.org/releases/musl-1.2.2.tar.gz
-          && tar zxf ./musl-1.2.2.tar.gz && cd musl-1.2.2/
-          && ./configure && sudo make install && sudo ln -s /usr/local/musl/bin/musl-gcc /usr/local/bin
+
+      - name: Configure AWS credentials
+        uses: aws-actions/configure-aws-credentials@v1
+        with:
+          aws-access-key-id: ${{ secrets.AWS_ACCESS_KEY_ID }}
+          aws-secret-access-key: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
+          aws-region: us-east-1
+
+      - name: Login to Amazon ECR
+        id: login-ecr
+        uses: aws-actions/amazon-ecr-login@v1
+
       - name: Build
-        run: CC=musl-gcc cargo build --release --target=x86_64-unknown-linux-musl --features vendored
+        run: DOCKER_BUILDKIT=1 docker build -t aws-lambda-adapter:latest .

Dockerfile

@@ -11,4 +11,4 @@ ADD . /app
 RUN source $HOME/.cargo/env && CC=musl-gcc cargo build --release --target=x86_64-unknown-linux-musl --features vendored
 
 FROM scratch AS package-stage
-COPY --from=build-stage /app/target/ /
+COPY --from=build-stage /app/target/x86_64-unknown-linux-musl/release/bootstrap /opt/bootstrap

Dockerfile.mac

@@ -0,0 +1,2 @@
+FROM scratch
+COPY target/x86_64-unknown-linux-musl/release/bootstrap /opt/bootstrap

Makefile

@@ -2,5 +2,10 @@ clean:
 	rm -rf target
 
 build:
-	aws ecr-public get-login-password --region us-east-1 | docker login --username AWS --password-stdin public.ecr.aws/awsguru
-	DOCKER_BUILDKIT=1 docker build --output target .
+	aws ecr-public get-login-password --region us-east-1 | docker login --username AWS --password-stdin public.ecr.aws
+	DOCKER_BUILDKIT=1 docker build -t aws-lambda-adapter:latest .
+
+build-mac:
+	CC=x86_64-unknown-linux-musl-gcc cargo build --release --target=x86_64-unknown-linux-musl --features vendored
+	aws ecr-public get-login-password --region us-east-1 | docker login --username AWS --password-stdin public.ecr.aws
+	DOCKER_BUILDKIT=1 docker build -f Dockerfile.mac -t aws-lambda-adapter:latest .

README.md

@@ -29,7 +29,7 @@ First, install [rustup](https://rustup.rs/) if you haven't done it already. Then
 $ rustup target add x86_64-unknown-linux-musl
 ```
 
-And we have to install macOS cross-compiler toolchains. `messense/homebrew-macos-cross-toolchains` can be used on both Intel Mac and Apple M1. 
+And we have to install macOS cross-compiler toolchains. `messense/homebrew-macos-cross-toolchains` can be used on both Intel chip and Apple M1 chip. 
 
 ```shell
 $ brew tap messense/macos-cross-toolchains
@@ -53,14 +53,21 @@ $ CC=x86_64-unknown-linux-musl-gcc cargo build --release --target=x86_64-unknown
 
 Lambda Adapter binary will be placed at `target/x86_64-unkonw-linux-musl/release/bootstrap`.
 
-### Compiling on Docker
+Finally, run the following command to package lambda adapter into a docker image named "aws-lambda-adapter:latest". 
+
+```shell
+$ aws ecr-public get-login-password --region us-east-1 | docker login --username AWS --password-stdin public.ecr.aws
+$ DOCKER_BUILDKIT=1 docker build -f Dockerfile.mac -t aws-lambda-adapter:latest .
+```
+
+### Compiling with Docker
 On x86_64 Windows, Linux and macOS, you can run one command to compile Lambda Adapter with docker. 
 
 ```shell
-make build
+$ make build
 ```
 
-The build output will be placed into `target` directory. 
+Once the build completes, it creates a docker image called "aws-lambda-adapter:latest". AWS Lambda Adapter binary is packaged as '/opt/bootstrap' inside the docker image. 
 
 ## How to use it? 
 
@@ -69,7 +76,7 @@ Below is an example Dockerfile for packaging a nodejs application.
 
 ```dockerfile
 FROM public.ecr.aws/lambda/nodejs:14
-COPY target/x86_64-unkonw-linux-musl/release/bootstrap /opt/bootstrap
+COPY --from aws-lambda-adapter:latest /opt/bootstrap
 ENTRYPOINT ["/opt/bootstrap"]
 EXPOSE 8080
 WORKDIR "/var/task"