94 lines
3.6 KiB
Docker
94 lines
3.6 KiB
Docker
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# syntax=docker/dockerfile:1
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# Comments are provided throughout this file to help you get started.
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# If you need more help, visit the Dockerfile reference guide at
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# https://docs.docker.com/go/dockerfile-reference/
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ARG RUST_VERSION=1.73.0
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ARG APP_NAME=p4bl0t
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################################################################################
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# xx is a helper for cross-compilation.
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# See https://github.com/tonistiigi/xx/ for more information.
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FROM --platform=$BUILDPLATFORM tonistiigi/xx:1.3.0 AS xx
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################################################################################
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# Create a stage for building the application.
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FROM --platform=$BUILDPLATFORM rust:${RUST_VERSION}-alpine AS build
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ARG APP_NAME
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WORKDIR /app
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# Copy cross compilation utilities from the xx stage.
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COPY --from=xx / /
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# Install host build dependencies.
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RUN apk add --no-cache clang lld musl-dev git file
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# This is the architecture you’re building for, which is passed in by the builder.
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# Placing it here allows the previous steps to be cached across architectures.
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ARG TARGETPLATFORM
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# Install cross compilation build dependencies.
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RUN xx-apk add --no-cache musl-dev gcc
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# Build the application.
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# Leverage a cache mount to /usr/local/cargo/registry/
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# for downloaded dependencies, a cache mount to /usr/local/cargo/git/db
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# for git repository dependencies, and a cache mount to /app/target/ for
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# compiled dependencies which will speed up subsequent builds.
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# Leverage a bind mount to the src directory to avoid having to copy the
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# source code into the container. Once built, copy the executable to an
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# output directory before the cache mounted /app/target is unmounted.
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RUN --mount=type=bind,source=src,target=src \
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--mount=type=bind,source=Cargo.toml,target=Cargo.toml \
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--mount=type=bind,source=Cargo.lock,target=Cargo.lock \
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--mount=type=bind,source=build.rs,target=build.rs \
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--mount=type=bind,source=.sqlx,target=.sqlx \
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--mount=type=bind,source=migrations,target=migrations \
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--mount=type=cache,target=/app/target/,id=rust-cache-${APP_NAME}-${TARGETPLATFORM} \
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--mount=type=cache,target=/usr/local/cargo/git/db \
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--mount=type=cache,target=/usr/local/cargo/registry/ \
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<<EOF
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set -e
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# xx-cargo build --locked --release --target-dir ./target
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xx-cargo build --locked --target-dir ./target
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cp ./target/$(xx-cargo --print-target-triple)/debug/$APP_NAME /bin/server
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xx-verify /bin/server
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EOF
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################################################################################
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# Create a new stage for running the application that contains the minimal
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# runtime dependencies for the application. This often uses a different base
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# image from the build stage where the necessary files are copied from the build
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# stage.
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#
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# The example below uses the alpine image as the foundation for running the app.
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# By specifying the "3.18" tag, it will use version 3.18 of alpine. If
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# reproducability is important, consider using a digest
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# (e.g., alpine@sha256:664888ac9cfd28068e062c991ebcff4b4c7307dc8dd4df9e728bedde5c449d91).
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FROM alpine:3.18 AS final
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# Create a non-privileged user that the app will run under.
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# See https://docs.docker.com/go/dockerfile-user-best-practices/
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ARG UID=10001
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RUN adduser \
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--disabled-password \
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--gecos "" \
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--home "/nonexistent" \
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--shell "/sbin/nologin" \
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--no-create-home \
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--uid "${UID}" \
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appuser
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WORKDIR /app
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RUN chown -R appuser /app
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USER appuser
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# Copy the executable from the "build" stage.
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COPY --from=build /bin/server /bin/
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# Expose the port that the application listens on.
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# EXPOSE 8080
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# What the container should run when it is started.
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CMD ["/bin/server"]
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