Improve Docker build efficiency #31
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WalkthroughThe updates modify Docker-related files to optimize build caching and context size. Rust backend and worker Dockerfiles now use a two-step process to cache dependencies before copying source code. The Changes
Sequence Diagram(s)sequenceDiagram
participant Docker
participant Cargo
participant SourceCode
Docker->Cargo: Copy Cargo.toml, Cargo.lock
Docker->Cargo: Create dummy main.rs
Docker->Cargo: cargo build --release --locked (cache dependencies)
Docker->Cargo: Remove dummy main.rs
Docker->SourceCode: Copy actual src/, migrations, diesel.toml
Docker->Cargo: cargo build --release --locked (build application)
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Actionable comments posted: 0
🧹 Nitpick comments (5)
frontend/Dockerfile.frontend (1)
9-13: Consolidated RUN step reduces layers effectively
Merging cache clean,npm ci, and additional installs into oneRUNinstruction minimizes image layers and improves build speed. Consider movingvuex@4and@types/nodeto yourpackage.json(dependencies and devDependencies, respectively), so thatnpm cican handle all installs in one go, further simplifying the Dockerfile.Dockerfile.backend (2)
9-13: Effective caching of Rust dependencies
Copying onlyCargo.tomlandCargo.lock, creating a dummysrc/main.rs, and runningcargo build --release --lockedisolates dependency compilation into its own layer. Consider usingcargo fetch --lockedinstead of a full dummy build to download dependencies without compiling, reducing build time further.
15-18: Optimize COPY instructions
To reduce image layers, consider combining the threeCOPYdirectives:COPY src migrations diesel.toml ./This merges them into a single layer and can speed up the build.
Dockerfile.worker (2)
12-16: Implement two-stage build for worker dependencies
Copying only the worker’sCargo.tomland compiling a dummymain.rsto cache dependencies is correct. You may also consider usingcargo fetch --lockedto download dependencies without compiling code, which can be faster than a full dummy build.
18-23: Streamline build step with WORKDIR
Instead of usingcdin theRUNcommand, set the working directory before copying and then run the build:WORKDIR /app/worker_app COPY worker_app ./ RUN cargo build --release --lockedThis improves readability and consistency.
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📒 Files selected for processing (4)
.dockerignore(1 hunks)Dockerfile.backend(1 hunks)Dockerfile.worker(1 hunks)frontend/Dockerfile.frontend(1 hunks)
🔇 Additional comments (1)
.dockerignore (1)
5-6: Appropriate exclusion of Rust build artifacts
Using**/targetwill prevent all Rust build artifacts (debug and release) from being sent to the Docker build context, which aligns with your multi-stage Dockerfiles. This change effectively reduces build context size.
Summary
.dockerignoreTesting
cargo check(fails: Could not connect to server)Summary by CodeRabbit
.dockerignorerules to exclude all Rust build artifacts, reducing Docker context size.