fix(docker): multi-stage build to reduce image size (#89)#188
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Philzwrist07 wants to merge 1 commit into
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fix(docker): multi-stage build to reduce image size (#89)#188Philzwrist07 wants to merge 1 commit into
Philzwrist07 wants to merge 1 commit into
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- Add builder stage (rust:1.75-slim-bookworm, pinned digest) that compiles WASM binaries - Add runtime stage (debian:bookworm-slim, pinned digest) that ships only the .wasm artifacts, eliminating the full Rust toolchain from the final image - Update docker-compose.yml: dev service targets builder stage; new artifacts service targets runtime stage (profile: artifacts) - Document both stages and build commands in README Closes PrincessnJoy#89
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Summary
Resolves #89.
The previous Dockerfile used a single stage, shipping the full Rust toolchain in the final image (~1.5 GB). This PR refactors it to a two-stage build:
builderrust:1.75-slim-bookworm(pinned digest)runtimedebian:bookworm-slim(pinned digest).wasmartifactsThe runtime image contains no Rust toolchain, reducing the final image size by >95% and eliminating build tools from the attack surface.
Changes
Dockerfile— two-stage build with pinned base image digestsdocker-compose.yml—devservice targetsbuilder; newartifactsservice (profile:artifacts) targetsruntimeREADME.md— documents both stages and build commandsTesting
docker build --target builder -t cosmosvote:builder .— builds successfullydocker build --target runtime -t cosmosvote:runtime .— produces minimal image with only.wasmfiles