Fix Docker build and add multi-platform support (#29)

* Specify node:lts-alpine tag to fix build error

* Attempt to remove dependency on rust-musl-builder

* Remove rustpad-server specifier

.github/workflows/ci.yml

@@ -13,6 +13,9 @@ jobs:
     name: Docker Build and Push
     runs-on: ubuntu-latest
     steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v1
 

Dockerfile

@@ -1,5 +1,6 @@
-FROM ekidd/rust-musl-builder:latest as backend
+FROM rust:alpine as backend
 WORKDIR /home/rust/src
+RUN apk --no-cache add musl-dev openssl-dev
 COPY . .
 RUN cargo test --release
 RUN cargo build --release
@@ -11,7 +12,7 @@ RUN curl https://rustwasm.github.io/wasm-pack/installer/init.sh -sSf | sh
 COPY . .
 RUN wasm-pack build rustpad-wasm
 
-FROM node:alpine as frontend
+FROM node:lts-alpine as frontend
 WORKDIR /usr/src/app
 COPY package.json package-lock.json ./
 COPY --from=wasm /home/rust/src/rustpad-wasm/pkg rustpad-wasm/pkg
@@ -23,6 +24,6 @@ RUN npm run build
 
 FROM scratch
 COPY --from=frontend /usr/src/app/build build
-COPY --from=backend /home/rust/src/target/x86_64-unknown-linux-musl/release/rustpad-server .
+COPY --from=backend /home/rust/src/target/release/rustpad-server .
 USER 1000:1000
 CMD [ "./rustpad-server" ]

README.md

@@ -103,8 +103,9 @@ docker pull ekzhang/rustpad
 ```
 
 (You can also manually build this image with `docker build -t rustpad .` in the
-project root directory.) To run locally, execute the following command, then
-open `http://localhost:3030` in your browser.
+project root directory, ensuring that your target platform is `linux/amd64`.) To
+run locally, execute the following command, then open `http://localhost:3030` in
+your browser.
 
 ```
 docker run --rm -dp 3030:3030 ekzhang/rustpad

rustpad-server/Cargo.toml

@@ -2,7 +2,7 @@
 name = "rustpad-server"
 version = "0.1.0"
 authors = ["Eric Zhang <ekzhang1@gmail.com>"]
-edition = "2018"
+edition = "2021"
 
 [dependencies]
 anyhow = "1.0.40"

rustpad-wasm/Cargo.toml

@@ -2,7 +2,7 @@
 name = "rustpad-wasm"
 version = "0.1.0"
 authors = ["Eric Zhang <ekzhang1@gmail.com>"]
-edition = "2018"
+edition = "2021"
 
 [lib]
 crate-type = ["cdylib", "rlib"]