fengling-console/docs/task-08-create-dockerfile.md

Task 8: Create Dockerfile

Task Description

Files:

• Create: src/Fengling.AuthService/Dockerfile
• Create: src/Fengling.AuthService/.dockerignore

Implementation Steps

Step 1: Create Dockerfile

Create: src/Fengling.AuthService/Dockerfile

FROM mcr.microsoft.com/dotnet/aspnet:10.0 AS base
WORKDIR /app
EXPOSE 80

FROM mcr.microsoft.com/dotnet/sdk:10.0 AS build
WORKDIR /src
COPY ["Fengling.AuthService.csproj", "./"]
RUN dotnet restore "Fengling.AuthService.csproj"
COPY . .
WORKDIR "/src"
RUN dotnet build "Fengling.AuthService.csproj" -c Release -o /app/build

FROM build AS publish
RUN dotnet publish "Fengling.AuthService.csproj" -c Release -o /app/publish /p:UseAppHost=false

FROM base AS final
WORKDIR /app
COPY --from=publish /app/publish .
ENTRYPOINT ["dotnet", "Fengling.AuthService.dll"]

Step 2: Create .dockerignore

Create: src/Fengling.AuthService/.dockerignore

bin/
obj/
Dockerfile
.dockerignore
*.md

Step 3: Commit

git add src/Fengling.AuthService/Dockerfile src/Fengling.AuthService/.dockerignore
git commit -m "feat(auth): add Dockerfile for containerization"

Context

This task adds Docker support for containerization. The multi-stage Dockerfile builds the project in a SDK container and copies only the runtime to a lightweight runtime container.

Tech Stack: Docker, .NET 10.0

Verification

• Dockerfile created with multi-stage build
• .dockerignore created
• Dockerfile uses .NET 10.0
• Exposes port 80
• Committed to git

Notes

• Multi-stage build reduces image size
• Only runtime container in final image
• Ready for Kubernetes deployment