49 lines
1.1 KiB
Docker
49 lines
1.1 KiB
Docker
# Multi-stage build for minimal final image
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FROM golang:1.23-alpine AS builder
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# Install build dependencies
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RUN apk add --no-cache git ca-certificates tzdata
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WORKDIR /build
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# Copy go mod files
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COPY go.mod go.sum* ./
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# Download dependencies (cached layer)
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RUN go mod download
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# Copy source code
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COPY . .
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# Build with optimizations
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RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build \
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-ldflags='-w -s -extldflags "-static"' \
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-a -installsuffix cgo \
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-o argparse-builder \
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.
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# Final stage - minimal image
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FROM scratch
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# Copy CA certificates for HTTPS (if needed)
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COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
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# Copy timezone data
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COPY --from=builder /usr/share/zoneinfo /usr/share/zoneinfo
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# Copy binary
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COPY --from=builder /build/argparse-builder /argparse-builder
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# Expose port
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EXPOSE 8080
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# Run as non-root (numeric UID for scratch)
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USER 65534:65534
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# Health check
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HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
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CMD ["/argparse-builder", "health"] || exit 1
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# Run the application
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ENTRYPOINT ["/argparse-builder"]
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