wehub-resource-sync
68 lines
1.4 KiB
Plaintext
68 lines
1.4 KiB
Plaintext
# Multi-stage build example
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FROM golang:1.21-alpine AS builder
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# Build arguments
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ARG VERSION=1.0.0
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ARG BUILD_DATE
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# Set working directory
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WORKDIR /app
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# Copy only necessary files for dependency resolution
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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 the application
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RUN CGO_ENABLED=0 GOOS=linux go build -ldflags="-X main.Version=${VERSION} -X main.BuildDate=${BUILD_DATE}" -o /app/server
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# Create final lightweight image
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FROM alpine:latest
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# Labels for metadata
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LABEL maintainer="example@example.com" \
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version="${VERSION}" \
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description="Example Dockerfile with various syntax elements"
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# Environment variables
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ENV APP_ENV=production \
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PORT=8080
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# Create non-root user
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RUN addgroup -S appgroup && adduser -S appuser -G appgroup
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# Install runtime dependencies
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RUN apk add --no-cache \
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ca-certificates \
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tzdata
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# Set working directory
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WORKDIR /app
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# Copy binary from builder stage
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COPY --from=builder /app/server .
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# Copy configuration files
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COPY config/production.yaml /etc/app/config.yaml
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# Create volume mount points
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VOLUME ["/data", "/logs"]
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# Expose ports
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EXPOSE 8080 8443
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# Switch to non-root user
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USER appuser
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# Health check
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HEALTHCHECK --interval=30s --timeout=3s \
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CMD wget --quiet --tries=1 --spider http://localhost:${PORT}/health || exit 1
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# Set entry point and default command
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ENTRYPOINT ["/app/server"]
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CMD ["--config", "/etc/app/config.yaml"]
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