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sample project showing using a custom base image
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| name: Custom Base Image Example | ||
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| on: | ||
| push: | ||
| workflow_dispatch: | ||
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| env: | ||
| GITHUB_USERNAME: baronfel | ||
| BASE_IMAGE: "ghcr.io/baronfel/dotnet-runtime-skia-base-image:8.0" | ||
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| jobs: | ||
| create-base-image: | ||
| permissions: | ||
| contents: read | ||
| packages: write | ||
| runs-on: ubuntu-latest | ||
| steps: | ||
| - name: Login to ghcr.io | ||
| uses: docker/login-action@v3 | ||
| with: | ||
| registry: ghcr.io | ||
| username: ${{ github.actor }} | ||
| password: ${{ secrets.GITHUB_TOKEN }} | ||
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| - name: Get the code | ||
| uses: actions/checkout@v2 | ||
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| - name: Build the base image | ||
| working-directory: src/custom-base-image | ||
| run: | | ||
| docker build -t ${{ env.BASE_IMAGE }} -f Dockerfile . | ||
| docker push ${{ env.BASE_IMAGE }} | ||
| use-base-image: | ||
| needs: create-base-image | ||
| permissions: | ||
| contents: read | ||
| packages: write | ||
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| runs-on: ubuntu-latest | ||
| steps: | ||
| - name: Login to ghcr.io | ||
| uses: docker/login-action@v3 | ||
| with: | ||
| registry: ghcr.io | ||
| username: ${{ github.actor }} | ||
| password: ${{ secrets.GITHUB_TOKEN }} | ||
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| - name: Get .NET | ||
| uses: actions/setup-dotnet@v4 | ||
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| - name: Build the app | ||
| run: | | ||
| dotnet publish -t:PublishContainer -p ContainerBaseImage="${{ env.BASE_IMAGE }}" |
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| FROM mcr.microsoft.com/dotnet/runtime:8.0 as base | ||
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| RUN apt-get update && apt-get install -y \ | ||
| libfreetype6 \ | ||
| libfontconfig1 \ | ||
| && rm -rf /var/lib/apt/lists/* |
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| // See https://aka.ms/new-console-template for more information | ||
| Console.WriteLine("Hello, World!"); |
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| # Using a custom base image container | ||
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| This sample demonstrates how to take control of the base image used by the SDK tooling to build your application. | ||
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| It includes | ||
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| * A Dockerfile with some customizations (in this case, installing a package into the runtime environment) | ||
| * A Console app that needs that package in order to execute | ||
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| To build and run the sample, follow these steps: | ||
| * build the base image and push it to a registry | ||
| * `docker build -f Dockerfile -t <my-registry>/<my-image-name>:<my-tag> .` | ||
| * `docker push <my-registry>/<my-image-name>:<my-tag>` | ||
| * publish the console application as a container, specifying your base image | ||
| * `dotnet publish -t:PublishContainer -p ContainerBaseImage=<my-registry>/<my-image-name>:<my-tag>` | ||
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| > [!IMPORTANT] | ||
| > Pushing images to a registry may require authentication, both on the push and pull side. Make sure you have the necessary credentials to access the registry you are using. |
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| <Project Sdk="Microsoft.NET.Sdk"> | ||
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| <PropertyGroup> | ||
| <OutputType>Exe</OutputType> | ||
| <TargetFramework>net8.0</TargetFramework> | ||
| <RuntimeIdentifier>linux-x64</RuntimeIdentifier> | ||
| <RootNamespace>custom_base_image</RootNamespace> | ||
| <ImplicitUsings>enable</ImplicitUsings> | ||
| <Nullable>enable</Nullable> | ||
| <EnableSdkContainerSupport>true</EnableSdkContainerSupport> | ||
| </PropertyGroup> | ||
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| </Project> |
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| Microsoft Visual Studio Solution File, Format Version 12.00 | ||
| # Visual Studio Version 17 | ||
| VisualStudioVersion = 17.5.002.0 | ||
| MinimumVisualStudioVersion = 10.0.40219.1 | ||
| Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "custom-base-image", "custom-base-image.csproj", "{572DAF66-27C5-4736-AD1A-790BEB45F45F}" | ||
| EndProject | ||
| Global | ||
| GlobalSection(SolutionConfigurationPlatforms) = preSolution | ||
| Debug|Any CPU = Debug|Any CPU | ||
| Release|Any CPU = Release|Any CPU | ||
| EndGlobalSection | ||
| GlobalSection(ProjectConfigurationPlatforms) = postSolution | ||
| {572DAF66-27C5-4736-AD1A-790BEB45F45F}.Debug|Any CPU.ActiveCfg = Debug|Any CPU | ||
| {572DAF66-27C5-4736-AD1A-790BEB45F45F}.Debug|Any CPU.Build.0 = Debug|Any CPU | ||
| {572DAF66-27C5-4736-AD1A-790BEB45F45F}.Release|Any CPU.ActiveCfg = Release|Any CPU | ||
| {572DAF66-27C5-4736-AD1A-790BEB45F45F}.Release|Any CPU.Build.0 = Release|Any CPU | ||
| EndGlobalSection | ||
| GlobalSection(SolutionProperties) = preSolution | ||
| HideSolutionNode = FALSE | ||
| EndGlobalSection | ||
| GlobalSection(ExtensibilityGlobals) = postSolution | ||
| SolutionGuid = {192A0D2A-7A6B-40E7-BA67-2957C25F8160} | ||
| EndGlobalSection | ||
| EndGlobal |