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Optimizing container builds for caching dependencies, (resulting in faster compile times)

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This commit is contained in:
Imbus 2023-11-14 03:43:57 +01:00
parent d46794fc17
commit d397b5c1ed
2 changed files with 22 additions and 6 deletions
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14
container/Containerfile
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@ -12,11 +12,19 @@ RUN npm run build
# We use musl to get a truly static binary
# that runs cleanly without depending on glibc.
FROM docker.io/rust:latest as builder
WORKDIR /build
ADD server /build
RUN apt update
RUN apt install musl musl-dev musl-tools -y
RUN rustup target add x86_64-unknown-linux-musl
# Some hacks to make podman cache build deps, see:
# https://whitfin.io/blog/speeding-up-rust-docker-builds/
RUN cargo new build-container
WORKDIR /build-container
COPY server/Cargo.toml server/Cargo.lock ./
RUN cargo build --target x86_64-unknown-linux-musl --release
RUN rm src/*.rs
ADD server /build-container
RUN cargo build --target x86_64-unknown-linux-musl --release
# Final stage, copy the server binary and the frontend build
@ -29,7 +37,7 @@ RUN addgroup -S user && adduser -S user -G user
WORKDIR /runner
# Copy the server binary and the public directory
COPY --from=builder /build/target/x86_64-unknown-linux-musl/release/server /runner/server
COPY --from=builder /build-container/target/x86_64-unknown-linux-musl/release/server /runner/server
# Copy the frontend SPA build into public
COPY --from=client /build/dist /runner/public

14
container/ContainerfileDebug
View file

@ -9,11 +9,19 @@
# We use musl to get a truly static binary
# that runs cleanly without depending on glibc.
FROM docker.io/rust:latest as builder
WORKDIR /build
ADD server /build
RUN apt update
RUN apt install musl musl-dev musl-tools -y
RUN rustup target add x86_64-unknown-linux-musl
# Some hacks to make podman cache build deps, see:
# https://whitfin.io/blog/speeding-up-rust-docker-builds/
RUN cargo new build-container
WORKDIR /build-container
COPY server/Cargo.toml server/Cargo.lock ./
RUN cargo build --target x86_64-unknown-linux-musl
RUN rm src/*.rs
ADD server /build-container
# Note that '--release' is missing here, so we build in debug mode
RUN cargo build --target x86_64-unknown-linux-musl
@ -27,7 +35,7 @@ RUN addgroup -S user && adduser -S user -G user
WORKDIR /runner
# Copy the server binary and the public directory, note the debug binary
COPY --from=builder /build/target/x86_64-unknown-linux-musl/debug/server /runner/server
COPY --from=builder /build-container/target/x86_64-unknown-linux-musl/debug/server /runner/server
RUN mkdir /runner/public
RUN echo "Debug build!" > /runner/public/index.html