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Dockerfile
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# syntax=docker/dockerfile:1
# 拉取了可以编译的RUST版本
ARG RUST_VERSION=1.75
ARG APP_NAME=wmproxy
FROM rust:${RUST_VERSION}-slim-bullseye AS build
ARG APP_NAME
WORKDIR /app
# Build the application.
# Leverage a cache mount to /usr/local/cargo/registry/
# for downloaded dependencies and a cache mount to /app/target/ for
# compiled dependencies which will speed up subsequent builds.
# Leverage a bind mount to the src directory to avoid having to copy the
# source code into the container. Once built, copy the executable to an
# output directory before the cache mounted /app/target is unmounted.
# 挂载相应的文件目录结构
RUN --mount=type=bind,source=src,target=src \
--mount=type=bind,source=Cargo.toml,target=Cargo.toml \
--mount=type=bind,source=.cargo,target=.cargo \
--mount=type=bind,source=Cargo.lock,target=Cargo.lock \
--mount=type=cache,target=/app/target/ \
--mount=type=cache,target=/usr/local/cargo/registry/ \
<<EOF
set -e
cargo build --locked --release
cp ./target/release/$APP_NAME /bin/wmproxy
EOF
################################################################################
# Create a new stage for running the application that contains the minimal
# runtime dependencies for the application. This often uses a different base
# image from the build stage where the necessary files are copied from the build
# stage.
#
# The example below uses the debian bullseye image as the foundation for running the app.
# By specifying the "bullseye-slim" tag, it will also use whatever happens to be the
# most recent version of that tag when you build your Dockerfile. If
# reproducability is important, consider using a digest
# (e.g., debian@sha256:ac707220fbd7b67fc19b112cee8170b41a9e97f703f588b2cdbbcdcecdd8af57).
# 用较小的发行版本做载体,保证较小的image
# 目标image中不包含Rust环境
FROM debian:bullseye-slim AS final
# Create a non-privileged user that the app will run under.
# See https://docs.docker.com/go/dockerfile-user-best-practices/
ARG UID=10001
RUN adduser \
--disabled-password \
--gecos "" \
--home "/nonexistent" \
--shell "/sbin/nologin" \
--no-create-home \
--uid "${UID}" \
appuser
USER root
# Copy the executable from the "build" stage.
COPY --from=build /bin/wmproxy /bin/
COPY config /etc/config
# Expose the port that the application listens on.
EXPOSE 82:82 8837:8837 8090:8090
# What the container should run when it is started.
CMD ["/bin/wmproxy", "-c", "/etc/config/reverse.toml"]