.dockerignore

Dockerfile
target
.git
.env

README.md

Rust app in scratch docker container

Build

docker build -t rust-app-scratch -f Dockerfile.scratch .

Run

docker run --rm rust-app-scratch

Imgage sizes

Hello world - 4.2MB

Dockerfile

FROM rust:1.68.0-alpine3.16

RUN apk --update --no-cache add g++ pkgconfig openssl-dev

WORKDIR /app

COPY Cargo.lock .
COPY Cargo.toml .

RUN cargo fetch --target x86_64-unknown-linux-musl

COPY . .

RUN cargo build --release

FROM scratch

# Add to Cargo.toml
# [[bin]]
# name = "app"
# path = "src/main.rs"
COPY --from=0 /app/target/release/app /app

ENTRYPOINT ["/app"]

Dockerfile.scratch

FROM rust:1.65.0-alpine3.16

WORKDIR /app

RUN cargo init
RUN cargo build --release

FROM scratch

COPY --from=0 /app/target/release/app /app

ENTRYPOINT ["/app"]