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Dockerfile

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+# ============ 多阶段构建：.NET 5.0 ============
+# 构建阶段
+FROM mcr.microsoft.com/dotnet/sdk:5.0 AS build
+WORKDIR /src
+
+# 复制解决方案与全部项目文件（利用层缓存）
+COPY YHDocPrintCore.sln* ./
+COPY src/*/*.csproj ./
+RUN for f in src/*/*.csproj; do \
+        mkdir -p "$(dirname "$f")" && mv "$f" "$(dirname "$f")/"; \
+    done \
+    && dotnet restore YHDocPrintCore.sln
+
+# 复制源码并发布
+COPY src/ src/
+RUN dotnet publish src/YHDocPrintCore.WebApi/YHDocPrintCore.WebApi.csproj \
+    -c Release -o /app/publish --no-restore
+
+# 运行阶段
+FROM mcr.microsoft.com/dotnet/aspnet:5.0 AS runtime
+WORKDIR /app
+COPY --from=build /app/publish .
+
+# 日志目录（接口访问日志唯一输出，挂载卷便于采集）
+RUN mkdir -p /app/logs
+VOLUME ["/app/logs"]
+
+EXPOSE 80
+ENV ASPNETCORE_URLS=http://+:80
+
+# 生产配置通过环境变量注入（ConnectionStrings__SqlServer / Redis:ConnectionString 等）
+ENTRYPOINT ["dotnet", "YHDocPrintCore.WebApi.dll"]