Skip to content

fix(docker): improve Dockerfile for cache efficiency and image size #537

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
Patrick-Ehimen wants to merge 1 commit into
base: main
Choose a base branch
from
Open

fix(docker): improve Dockerfile for cache efficiency and image size #537

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
54 changes: 43 additions & 11 deletions Dockerfile
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,32 +1,64 @@
FROM rust:1.95.0-bookworm AS builder
# syntax=docker/dockerfile:1

ARG GIT_COMMIT_HASH_SHORT
ENV GIT_COMMIT_HASH_SHORT=${GIT_COMMIT_HASH_SHORT}

ARG SOURCE_DATE_EPOCH
ENV SOURCE_DATE_EPOCH=${SOURCE_DATE_EPOCH}
# ── Base: system deps + cargo-chef + correct Rust toolchain ───────────────────
# rust:slim-bookworm@sha256:e18a79... (2026-07-07)
FROM rust:slim-bookworm@sha256:e18a79fc84dfcfc3ab5ba72290398a644c135c97eaa881447fddc354ee4701a3 AS chef

RUN apt-get update && \
apt-get install -y pkg-config \
openssl libssl-dev \
protobuf-compiler=3.21.12*
apt-get install -y --no-install-recommends \
pkg-config \
libssl-dev \
protobuf-compiler=3.21.12-3 && \
rm -rf /var/lib/apt/lists/*

RUN --mount=type=cache,target=/usr/local/cargo/registry \
--mount=type=cache,target=/usr/local/cargo/git \
cargo install cargo-chef --locked --version 0.1.77

WORKDIR /build

# Install the toolchain declared in rust-toolchain.toml (single source of truth).
# This layer is cached until rust-toolchain.toml changes.
COPY rust-toolchain.toml .
RUN rustup show

# ── Planner: compute the dependency recipe from the full source tree ───────────
FROM chef AS planner
COPY . .
RUN cargo chef prepare --recipe-path recipe.json

# ── Builder: compile deps then the binary ─────────────────────────────────────
FROM chef AS builder

ARG GIT_COMMIT_HASH_SHORT
ENV GIT_COMMIT_HASH_SHORT=${GIT_COMMIT_HASH_SHORT}

ARG SOURCE_DATE_EPOCH
ENV SOURCE_DATE_EPOCH=${SOURCE_DATE_EPOCH}

# Build oas3-gen independently so it is cached unless the version changes.
RUN --mount=type=cache,target=/usr/local/cargo/registry \
--mount=type=cache,target=/usr/local/cargo/git \
cargo install oas3-gen@0.24.0
cargo install oas3-gen --locked --version 0.24.0

# Cook dependencies only (re-runs only when Cargo.toml / Cargo.lock change).
COPY --from=planner /build/recipe.json recipe.json
RUN --mount=type=cache,target=/usr/local/cargo/registry \
--mount=type=cache,target=/usr/local/cargo/git \
--mount=type=cache,target=/build/target \
cargo chef cook --locked --release --recipe-path recipe.json

# Build the binary (only pluto source is recompiled on source changes).
COPY . .
RUN --mount=type=cache,target=/usr/local/cargo/registry \
--mount=type=cache,target=/usr/local/cargo/git \
--mount=type=cache,target=/build/target \
cargo build --locked --release --package pluto-cli && \
cp /build/target/release/pluto /usr/local/bin/pluto

FROM gcr.io/distroless/cc-debian13 AS app
# ── Runtime: minimal distroless image ─────────────────────────────────────────
# gcr.io/distroless/cc-debian13@sha256:a017e7... (2026-07-07)
FROM gcr.io/distroless/cc-debian13@sha256:a017e74bd2a12d98342dbecd33d121d2b160415ed777573dc1808969e989d94d AS app

COPY --from=builder /usr/local/bin/pluto /app/bin/pluto

Expand Down