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Learn how to use multi-stage Docker builds to separate build tools from runtime environments for security and performance.
Learn how to use Docker multi-stage builds to separate build-time toolchains from minimal runtime images, reducing image size and eliminating security risks from build-time secrets.
An architecture note on Docker multi-stage builds: why two stages are enough, where the trust boundary sits at COPY --from, and the operational checks that prove your runtime image ships no toolchain.
Goal: establish a repeatable development environment where application source changes are visible immediately while keeping dependency versions consistent across developer machines. Constraint: Docker Compose services can use bind mounts to mirror local source into containers without rebuilding images, but host file ownership and missing host tooling can div
docker