Add GitHub CLI component to Claude Docker container

Automatically installs gh CLI when ClaudeComponent is enabled, enabling
GitHub workflows (PRs, issues, releases) from within the container.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <[email protected]>

Author: gfraiteur

Dockerfile.claude

@@ -68,6 +68,16 @@ RUN Invoke-WebRequest -Uri "https://nodejs.org/dist/v22.0.0/node-v22.0.0-win-x64
 ENV PATH="C:\nodejs;${PATH}"
 
 
+# Install GitHub CLI
+RUN Invoke-WebRequest -Uri https://github.com/cli/cli/releases/download/v2.63.2/gh_2.63.2_windows_amd64.msi -OutFile gh.msi; `
+    $process = Start-Process msiexec.exe -Wait -PassThru -ArgumentList '/I gh.msi /quiet'; `
+    if ($process.ExitCode -ne 0) { exit $process.ExitCode }; `
+    Remove-Item gh.msi
+
+# Add GitHub CLI to PATH using ENV directive (persists across shell switches)
+ENV PATH="C:\Program Files\GitHub CLI;${PATH}"
+
+
 # Install Claude CLI
 # Configure npm global directory to avoid Windows container path issues
 ENV NPM_CONFIG_PREFIX=C:\npm

src/PostSharp.Engineering.BuildTools/Docker/ClaudeComponent.cs

@@ -48,5 +48,11 @@ public override void AddRequirements( IReadOnlyList<ContainerComponent> componen
             throw new InvalidOperationException(
                 $"Claude CLI requires Node.js >= {_minNodeVersion}, but {existingNodeJs.Version} is configured." );
         }
+
+        // Auto-add GitHubCliComponent if not already present
+        if ( !components.OfType<GitHubCliComponent>().Any() )
+        {
+            add( new GitHubCliComponent() );
+        }
     }
 }

src/PostSharp.Engineering.BuildTools/Docker/ContainerComponentKind.cs

@@ -17,6 +17,7 @@ public enum ContainerComponentKind
     NodeJs,
     Python,
     Gulp,
+    GitHubCli,
     Claude,
     Epilogue
 }

src/PostSharp.Engineering.BuildTools/Docker/GitHubCliComponent.cs

@@ -0,0 +1,28 @@
+// Copyright (c) SharpCrafters s.r.o. See the LICENSE.md file in the root directory of this repository root for details.
+
+using JetBrains.Annotations;
+using System.IO;
+
+namespace PostSharp.Engineering.BuildTools.Docker;
+
+[PublicAPI]
+public sealed class GitHubCliComponent : ContainerComponent
+{
+    public override string Name => "Install GitHub CLI";
+
+    public override ContainerComponentKind Kind => ContainerComponentKind.GitHubCli;
+
+    public override void WriteDockerfile( TextWriter writer )
+    {
+        writer.WriteLine(
+            """
+            RUN Invoke-WebRequest -Uri https://github.com/cli/cli/releases/download/v2.63.2/gh_2.63.2_windows_amd64.msi -OutFile gh.msi; `
+                $process = Start-Process msiexec.exe -Wait -PassThru -ArgumentList '/I gh.msi /quiet'; `
+                if ($process.ExitCode -ne 0) { exit $process.ExitCode }; `
+                Remove-Item gh.msi
+
+            # Add GitHub CLI to PATH using ENV directive (persists across shell switches)
+            ENV PATH="C:\Program Files\GitHub CLI;${PATH}"
+            """ );
+    }
+}