# -*- mode: dockerfile -*-
#
# An example Dockerfile showing how to build a Rust executable using this
# image, and deploy it with a tiny Alpine Linux container.

# Our first FROM statement declares the build environment.
FROM ekidd/rust-musl-builder AS builder

# You would normally add your source code to /home/rust/src like this.
# ADD . ./
# RUN sudo chmod -R .

# ...but we're going to just create a new app instead for demo purposes.
RUN cd .. && rm -r src && USER=rust cargo new --vcs none --bin --name hello src

# Build our application.
RUN cargo build --release

# Now, we need to build our _real_ Docker container, copying in `hello`.
FROM alpine:latest
RUN apk --no-cache add ca-certificates
COPY --from=builder \
    /home/rust/src/target/x86_64-unknown-linux-musl/release/hello \
    /usr/local/bin/
CMD /usr/local/bin/hello