71 lines
1.5 KiB
Docker
71 lines
1.5 KiB
Docker
# 多阶段构建 Dockerfile - Temp Mail
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# 生产环境镜像，直接监听 25 端口
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# ============================================
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# 阶段 1: 构建阶段
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# ============================================
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FROM golang:1.22-alpine AS builder
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# 安装构建依赖
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RUN apk add --no-cache git ca-certificates tzdata
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# 设置工作目录
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WORKDIR /build
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# 复制 go mod 文件
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COPY go.mod go.sum ./
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# 下载依赖
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RUN go mod download
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# 复制源代码
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COPY . .
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# 编译程序（静态链接，减小体积）
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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 temp-mail \
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./cmd/temp-mail
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# ============================================
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# 阶段 2: 运行阶段
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# ============================================
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FROM alpine:latest
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# 安装运行时依赖
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RUN apk --no-cache add ca-certificates tzdata
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# 设置时区
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ENV TZ=Asia/Shanghai
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# 创建工作目录
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WORKDIR /app
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# 从构建阶段复制二进制文件
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COPY --from=builder /build/temp-mail /app/temp-mail
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# 复制静态文件
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COPY --from=builder /build/static /app/static
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# 设置文件权限
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RUN chmod +x /app/temp-mail
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# 以 root 运行（监听 25 端口需要特权）
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# USER root (默认就是 root)
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# 暴露端口
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EXPOSE 8080 25
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# 设置默认环境变量
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ENV HTTP_ADDR=:8080 \
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SMTP_ADDR=:25 \
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DOMAIN=tmp.local \
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MESSAGE_TTL=30m
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# 健康检查
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HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
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CMD wget --no-verbose --tries=1 --spider http://localhost:8080/ || exit 1
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# 启动程序
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CMD ["/app/temp-mail"]
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