Deploy Rust App In Docker Container.

Dockerfile-Rust-App

# Dockerfile for creating a statically-linked Rust application using docker's
# multi-stage build feature. This also leverages the docker build cache to avoid
# re-downloading dependencies if they have not changed.
FROM rust:latest AS build
WORKDIR /usr/src

# Download the target for static linking.
RUN rustup target add x86_64-unknown-linux-musl

# Create a dummy project and build the app's dependencies.
# If the Cargo.toml or Cargo.lock files have not changed,
# we can use the docker build cache and skip these (typically slow) steps.
RUN USER=root
WORKDIR /usr/src/rust-book-sample

# Cargo.toml:
# [package]
# name = "rust-book-sample"
# version = "0.1.0"
# authors = ["Jared.Tan <tanjian@apache.org>"]
# edition = "2018"
# [dependencies]

COPY Cargo.toml Cargo.lock ./
COPY src src
RUN cargo build --release \
    && cargo install --target x86_64-unknown-linux-musl --path .

# Copy the statically-linked binary into a scratch container.
FROM scratch
COPY --from=build /usr/local/cargo/bin/rust-book-sample .
USER 1000
CMD ["./rust-book-sample"]

# docker build -f Dockerfile-Rust-App -t rust-app .
# docker run rust-app