setup-dotnet/README.md

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# setup-dotnet
[![GitHub Actions Status](https://github.com/actions/setup-dotnet/workflows/Main%20workflow/badge.svg)](https://github.com/actions/setup-dotnet)
This action sets up a [.NET CLI](https://github.com/dotnet/sdk) environment for use in actions by:
- optionally downloading and caching a version(s) of dotnet by SDK version(s) and adding to PATH
- registering problem matchers for error output
- setting up authentication to private package sources like GitHub Packages
> **Note**: GitHub hosted runners have some versions of the .NET SDK
preinstalled. Installed versions are subject to change. Please refer to the
documentation
[software installed on github hosted runners](https://docs.github.com/en/actions/using-github-hosted-runners/about-github-hosted-runners#supported-software)
for .NET SDK versions that are currently available.
## Usage
See [action.yml](action.yml)
**Basic**:
```yaml
steps:
- uses: actions/checkout@v3
- uses: actions/setup-dotnet@v3
with:
dotnet-version: '3.1.x'
- run: dotnet build <my project>
```
**Multiple version installation**:
```yml
steps:
- uses: actions/checkout@v3
- name: Setup dotnet
uses: actions/setup-dotnet@v3
with:
dotnet-version: |
3.1.x
5.0.x
- run: dotnet build <my project>
```
> **Note**: In case multiple versions are installed, the latest .NET version will be used by default unless another version is specified in the `global.json` file.
## Supported version syntax
The `dotnet-version` input supports following syntax:
- **A.B.C** (e.g 6.0.400, 7.0.100-preview.7.22377.5) - installs exact version of .NET SDK
- **A.B** or **A.B.x** (e.g. 3.1, 3.1.x) - installs the latest patch version of .NET SDK on the channel `3.1`, including prerelease versions (preview, rc)
- **A** or **A.x** (e.g. 3, 3.x) - installs the latest minor version of the specified major tag, including prerelease versions (preview, rc)
## Using the `dotnet-quality` input
This input sets up the action to install the latest build of the specified quality in the channel. The possible values of `dotnet-quality` are: **daily**, **signed**, **validated**, **preview**, **ga**.
> **Note**: `dotnet-quality` input can be used only with .NET SDK version in 'A.B', 'A.B.x', 'A' and 'A.x' formats where the major version is higher than 5. In other cases, `dotnet-quality` input will be ignored.
```yml
steps:
- uses: actions/checkout@v3
- uses: actions/setup-dotnet@v3
with:
dotnet-version: '6.0.x'
dotnet-quality: 'preview'
- run: dotnet build <my project>
```
## Using the `global-json-file` input
`setup-dotnet` action can read .NET SDK version from a `global.json` file. Input `global-json-file` is used for specifying the path to the `global.json`. If the file that was supplied to `global-json-file` input doesn't exist, the action will fail with error.
>**Note**: In case both `dotnet-version` and `global-json-file` inputs are used, versions from both inputs will be installed.
```yml
steps:
- uses: actions/checkout@v3
- uses: actions/setup-dotnet@v3
with:
global-json-file: csharp/global.json
- run: dotnet build <my project>
working-directory: csharp
```
## Matrix Testing
Using `setup-dotnet` it's possible to use [matrix syntax](https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#jobsjob_idstrategymatrix) to install several versions of .NET SDK:
```yml
jobs:
build:
runs-on: ubuntu-latest
strategy:
matrix:
dotnet: [ '2.1.x', '3.1.x', '5.0.x' ]
name: Dotnet ${{ matrix.dotnet }} sample
steps:
- uses: actions/checkout@v3
- name: Setup dotnet
uses: actions/setup-dotnet@v3
with:
dotnet-version: ${{ matrix.dotnet }}
- run: dotnet build <my project>
```
## Setting up authentication for nuget feeds
### Github Package Registry (GPR)
```yml
steps:
- uses: actions/checkout@v3
- uses: actions/setup-dotnet@v3
with:
dotnet-version: '3.1.x'
source-url: https://nuget.pkg.github.com/<owner>/index.json
env:
NUGET_AUTH_TOKEN: ${{secrets.GITHUB_TOKEN}}
- run: dotnet build <my project>
- name: Create the package
run: dotnet pack --configuration Release <my project>
- name: Publish the package to GPR
run: dotnet nuget push <my project>/bin/Release/*.nupkg
```
### Azure Artifacts
```yml
- uses: actions/setup-dotnet@v3
with:
source-url: https://pkgs.dev.azure.com/<your-organization>/_packaging/<your-feed-name>/nuget/v3/index.json
env:
NUGET_AUTH_TOKEN: ${{secrets.AZURE_DEVOPS_PAT}} # Note, create a secret with this name in Settings
- name: Publish the package to Azure Artifacts
run: dotnet nuget push <my project>/bin/Release/*.nupkg
```
### nuget.org
```yml
- uses: actions/setup-dotnet@v3
with:
dotnet-version: 3.1.x
- name: Publish the package to nuget.org
run: dotnet nuget push */bin/Release/*.nupkg -k $NUGET_AUTH_TOKEN -s https://api.nuget.org/v3/index.json
env:
NUGET_AUTH_TOKEN: ${{ secrets.NUGET_TOKEN }}
```
> **Note**: It's the only way to push a package to nuget.org feed for macOS/Linux machines due to API key config store limitations.
## Environment variables
Some environment variables may be necessary for your particular case or to improve logging. Some examples are listed below, but the full list with complete details can be found here: https://docs.microsoft.com/en-us/dotnet/core/tools/dotnet-environment-variables
| **Env.variable** | **Description** | **Default value** |
| ----------- | ----------- | ----------- |
| DOTNET_NOLOGO |Removes logo and telemetry message from first run of dotnet cli|*false*|
| DOTNET_CLI_TELEMETRY_OPTOUT |Opt-out of telemetry being sent to Microsoft|*false*|
| DOTNET_MULTILEVEL_LOOKUP |Configures whether the global install location is used as a fall-back|*true*|
**Example usage**:
```yml
build:
runs-on: ubuntu-latest
env:
DOTNET_NOLOGO: true
steps:
- uses: actions/checkout@main
- uses: actions/setup-dotnet@v3
with:
dotnet-version: '3.1.x'
```
## License
The scripts and documentation in this project are released under the [MIT License](LICENSE)
## Contributions
Contributions are welcome! See [Contributor's Guide](docs/contributors.md)