Admin
c58e193038
Replace Air's kill-and-rerun loop in the debug image with the pilot persistent-delve supervisor: src/dev/dlv-watch.sh owns one headless `dlv exec --multiclient --continue` server, rebuilds ./tmp/main on save and restarts only the debug target through the tiny rpc2 client in src/dev/dlv-restart. An attached VS Code session (and its breakpoints) now survives saves instead of reconnecting after every reload. The debug compose builds locally with `pull_policy: build` and without `build.network: host`: compose cannot grant the network.host entitlement, so a cold `up` previously failed with "additional privileges requested"; the default bridge reaches the dev Gitea for module resolution.
67 lines
2.5 KiB
Docker
67 lines
2.5 KiB
Docker
# Source: https://oneuptime.com/blog/post/2026-01-07-go-hot-reloading-docker-air/view#step-3-create-the-development-dockerfile
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# Dockerfile (Development)
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# This Dockerfile is optimized for development with hot reloading
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# It includes Air and mounts your source code as a volume
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# Use the official Go image as our base
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# Alpine variant is smaller but we use the full image for better compatibility
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FROM golang:1.26-bookworm
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# Set the working directory inside the container
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# All subsequent commands will run from this directory
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WORKDIR /app
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# Shared modules (git.dcntrlized.org/dcntrlized/dcntrlized-auth) are served by
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# the dev Gitea Go module proxy. Override via --build-arg in production.
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ARG GOPROXY_VALUE=http://192.168.122.183:3000/api/packages/Dcntrlized/go
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ARG GONOSUMDB_VALUE=git.dcntrlized.org
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ENV GOPROXY=${GOPROXY_VALUE},https://proxy.golang.org,direct
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ENV GONOSUMDB=${GONOSUMDB_VALUE}
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# Install Air for hot reloading
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# We install it globally so it's available in the PATH
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RUN go install github.com/air-verse/air@latest
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# Install additional development tools (optional but useful)
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# - delve: Go debugger for debugging inside containers
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# - golangci-lint: Linter for code quality checks
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RUN go install github.com/go-delve/delve/cmd/dlv@latest && \
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curl -sSfL https://golangci-lint.run/install.sh | sh -s -- -b $(go env GOPATH)/bin v2.11.2
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# Copy go.mod and go.sum first for better layer caching
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# This layer only rebuilds when dependencies change
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COPY src/go.mod src/go.sum* ./
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# Download all dependencies
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# This is cached separately from source code changes
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RUN go mod download && go mod verify
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# Copy the Air configuration file
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# This tells Air how to watch and rebuild our application
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COPY ./src/.air.toml ./
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# Note: We do NOT copy source code here!
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# Source code is mounted as a volume in Docker Compose
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# This enables hot reloading without rebuilding the image
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# Expose the application port
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# Make sure this matches your application's listening port
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EXPOSE 8080
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# Expose delve debugger port (optional, for debugging)
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EXPOSE 2345
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# Set environment variables for development
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ENV GO111MODULE=on
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# Default command: persistent-delve hot-reload supervisor (src/dev/dlv-watch.sh).
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# Unlike Air, it never kills the dlv server, so an attached VS Code debug
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# session survives file saves (Delve's `restart` only re-launches the target).
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# src/ is live-mounted at /app, so this runs the in-repo copy you can edit.
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CMD ["bash", "/app/dev/dlv-watch.sh"]
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##
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LABEL org.dcntrlized.service=KeepNote
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LABEL org.dcntrlized.port=8080 |