chore(docker): shrink image with multi-stage slim build#476
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RodriSanchez1 wants to merge 1 commit into
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chore(docker): shrink image with multi-stage slim build#476RodriSanchez1 wants to merge 1 commit into
RodriSanchez1 wants to merge 1 commit into
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Rework the Dockerfile to reduce the final image size: - Switch base image from node:18.18.1 to node:18.18.1-slim. - Add a dedicated deps stage that installs production dependencies only (--production --frozen-lockfile) and cleans the yarn cache. - Copy only node_modules from the deps stage into the runtime image, leaving build-time cruft behind. - Drop the unused global installs (node-gyp, swagger); neither is needed at runtime. - Run as the non-root node user and start via `node app.js` directly. - Fix the broken .dockerignore so node_modules, .git, tests and other files are excluded from the build context. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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Summary
Reworks the
Dockerfileto significantly reduce the final image size using a multi-stage build.Changes
node:18.18.1→node:18.18.1-slim(the biggest size win).depsstage: installs production dependencies only (--production --frozen-lockfile) and runsyarn cache clean.runtimestage: copies onlynode_modulesfrom thedepsstage, leaving build-time cruft out of the shipped image. Also improves rebuild speed via layer caching (deps are installed before source is copied).node-gyp,swagger) — neither is needed at runtime (bcryptjsis pure JS;req.swaggercomes from theswagger-*dependencies, not the global CLI).nodeuser and starts vianode app.jsdirectly instead ofyarn start..dockerignore: replaced the broken un-ignore rules with a real exclude list, sonode_modules,.git, tests, etc. no longer leak into the build context.Testing
docker build -t cboard-api:slim .completes successfullydocker images cboard-api:slimshows a reduced size vs the previous full image🤖 Generated with Claude Code