mirror of
https://github.com/shankar0123/certctl.git
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shankar0123
54 lines
1.1 KiB
Docker
54 lines
1.1 KiB
Docker
# Multi-stage build for certctl agent binary
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# Stage 1: Build
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FROM golang:1.22-alpine AS builder
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# Install build dependencies
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RUN apk add --no-cache git ca-certificates
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# Set working directory
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WORKDIR /app
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# Copy go mod and sum files
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COPY go.mod go.sum ./
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# Download dependencies
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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 agent binary only
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RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build \
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-ldflags="-w -s" \
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-o bin/agent \
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./cmd/agent
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# Stage 2: Runtime
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FROM alpine:3.19
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# Install runtime dependencies (minimal)
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RUN apk add --no-cache ca-certificates curl
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# Create non-root user
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RUN addgroup -g 1000 certctl && \
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adduser -D -u 1000 -G certctl certctl
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# Set working directory
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WORKDIR /app
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# Copy binary from builder
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COPY --from=builder /app/bin/agent .
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# Change ownership
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RUN chown -R certctl:certctl /app
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# Switch to non-root user
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USER certctl
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# Health check (optional, depends on agent implementation)
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HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
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CMD curl -f http://localhost:9000/health || exit 1 || true
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# Default entrypoint is the agent
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ENTRYPOINT ["/app/agent"]
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