38 lines
764 B
Docker
38 lines
764 B
Docker
# Build stage
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FROM golang:1.21-alpine AS builder
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WORKDIR /app
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COPY go.mod go.sum ./
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RUN go mod download
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COPY main.go index.html favicon.ico ./
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RUN CGO_ENABLED=0 GOOS=linux go build -ldflags="-s -w" -o nats-ui main.go
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# Runtime stage
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FROM alpine:3.19
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RUN apk --no-cache add ca-certificates tzdata && \
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adduser -D -u 1000 -h /app appuser
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WORKDIR /app
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COPY --from=builder /app/nats-ui ./
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# config.yaml is in .gitignore; create default in image (override via volume at runtime)
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RUN printf '%s\n' \
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'nats_url: "nats://localhost:4222"' \
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'subjects: ">"' \
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'port: "8080"' \
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'max_messages: 1000' \
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> config.yaml
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RUN chmod +x nats-ui && chown -R appuser:appuser /app
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EXPOSE 8080
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USER appuser
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ENTRYPOINT ["./nats-ui"]
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CMD ["config.yaml"]
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