46 lines
1.1 KiB
Docker
46 lines
1.1 KiB
Docker
# Stage 1: Build
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FROM golang:1.25.5-alpine AS builder
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RUN apk add --no-cache tzdata
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WORKDIR /app
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ENV GOPROXY=https://goproxy.cn,direct
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ENV GOSUMDB=off
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# 1. 先拷贝并下载依赖（利用 Docker 层缓存）
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COPY go.mod go.sum ./
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RUN go mod download
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# 2. 拷贝源代码和环境配置文件
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COPY . .
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# 3. 正确使用 BuildKit 缓存挂载（必须将 --mount 和 go build 放在同一行 RUN 中）
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# 这样即便代码变了，/root/.cache/go-build 下的增量编译结果依然会被复用
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RUN --mount=type=cache,target=/go/pkg/mod \
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--mount=type=cache,target=/root/.cache/go-build \
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CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o main .
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# Stage 2: Run
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FROM alpine:latest AS runner
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# 安装必要的依赖
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RUN apk --no-cache add ca-certificates tzdata
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# 设置时区为东八区
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ENV TZ=Asia/Shanghai
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RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone
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WORKDIR /app
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# 复制二进制文件和环境配置文件
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COPY --from=builder /app/main .
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COPY --from=builder /app/.env .env
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# 设置环境变量默认值
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ENV SERVER_PORT=6555
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EXPOSE 6555
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CMD ["./main"]
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