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Dockerfile
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Dockerfile
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# syntax=docker/dockerfile:1
# Comments are provided throughout this file to help you get started.
# If you need more help, visit the Dockerfile reference guide at
# https://docs.docker.com/engine/reference/builder/
################################################################################
# Create a stage for building the application.
ARG RUST_VERSION=1.74.0
ARG APP_NAME=qwit
FROM rust:${RUST_VERSION}-slim-bullseye AS build
ARG APP_NAME
WORKDIR /app
# Build the application.
# Leverage a cache mount to /usr/local/cargo/registry/
# for downloaded dependencies and a cache mount to /app/target/ for
# compiled dependencies which will speed up subsequent builds.
# Leverage a bind mount to the src directory to avoid having to copy the
# source code into the container. Once built, copy the executable to an
# output directory before the cache mounted /app/target is unmounted.
RUN --mount=type=bind,source=src,target=src \
--mount=type=bind,source=Cargo.toml,target=Cargo.toml \
--mount=type=bind,source=Cargo.lock,target=Cargo.lock \
--mount=type=cache,target=/app/target/ \
--mount=type=cache,target=/usr/local/cargo/registry/ \
<<EOF
set -e
cargo build --locked --release
cp ./target/release/$APP_NAME /bin/app
EOF
FROM debian:bullseye-slim AS final
# Copy the executable from the "build" stage.
COPY --from=build /bin/app /bin/
# What the container should run when it is started.
ENTRYPOINT [ "/bin/app" ]