(GH-2028) added GitHubActions build support

Author: arturcic

build.cake

@@ -71,6 +71,7 @@ Setup<BuildParameters>(context =>
         if (parameters.IsRunningOnAppVeyor)      Information("Building on AppVeyor");
         if (parameters.IsRunningOnTravis)        Information("Building on Travis");
         if (parameters.IsRunningOnAzurePipeline) Information("Building on AzurePipeline");
+        if (parameters.IsRunningOnGitHubActions) Information("Building on GitHubActions");
 
         Information("Building version {0} of GitVersion ({1}, {2})",
             parameters.Version.SemVersion,

build/utils/docker.cake

@@ -127,6 +127,13 @@ DockerContainerRunSettings GetDockerRunSettings(BuildParameters parameters)
             $"BUILD_SOURCEBRANCH={Context.EnvironmentVariable("BUILD_SOURCEBRANCH")}"
         };
     }
+    if (parameters.IsRunningOnGitHubActions) {
+        settings.Env = new[]
+        {
+            "GITHUB_ACTIONS=true",
+            $"GITHUB_REF={Context.EnvironmentVariable("GITHUB_REF")}"
+        };
+    }
 
     return settings;
 }
@@ -170,7 +177,7 @@ string[] GetDockerTags(DockerImage dockerImage, BuildParameters parameters) {
 static string GetDockerCliPlatform(this ICakeContext context)
 {
     var buildSystem = context.BuildSystem();
-    var ciSupportsDockerBuild = buildSystem.IsRunningOnAzurePipelines || buildSystem.IsRunningOnAzurePipelinesHosted;
+    var ciSupportsDockerBuild = buildSystem.IsRunningOnAzurePipelines || buildSystem.IsRunningOnAzurePipelinesHosted || buildSystem.IsRunningOnGitHubActions;
 
     if (ciSupportsDockerBuild && context.Environment.Platform.Family != PlatformFamily.OSX || buildSystem.IsLocalBuild)
     {

build/utils/parameters.cake

@@ -36,6 +36,7 @@ public class BuildParameters
     public bool IsRunningOnAppVeyor { get; private set; }
     public bool IsRunningOnTravis { get; private set; }
     public bool IsRunningOnAzurePipeline { get; private set; }
+    public bool IsRunningOnGitHubActions { get; private set; }
 
     public bool IsReleasingCI { get; private set; }
 
@@ -94,8 +95,9 @@ public class BuildParameters
             IsRunningOnAppVeyor      = buildSystem.IsRunningOnAppVeyor,
             IsRunningOnTravis        = buildSystem.IsRunningOnTravisCI,
             IsRunningOnAzurePipeline = buildSystem.IsRunningOnAzurePipelines || buildSystem.IsRunningOnAzurePipelinesHosted,
+            IsRunningOnGitHubActions = buildSystem.IsRunningOnGitHubActions,
 
-            IsReleasingCI = buildSystem.IsRunningOnAzurePipelines || buildSystem.IsRunningOnAzurePipelinesHosted,
+            IsReleasingCI = buildSystem.IsRunningOnAzurePipelines || buildSystem.IsRunningOnAzurePipelinesHosted || buildSystem.IsRunningOnGitHubActions,
 
             IsDockerForWindows = dockerCliPlatform == "windows",
             IsDockerForLinux   = dockerCliPlatform == "linux",

build/utils/utils.cake

@@ -25,6 +25,10 @@ public static bool IsOnMainRepo(this ICakeContext context)
     {
         repositoryName = buildSystem.TFBuild.Environment.Repository.RepoName;
     }
+    else if (buildSystem.IsRunningOnGitHubActions)
+    {
+        repositoryName = buildSystem.GitHubActions.Environment.Workflow.Repository;
+    }
 
     context.Information("Repository Name: {0}" , repositoryName);
 
@@ -47,6 +51,10 @@ public static bool IsOnMainBranch(this ICakeContext context)
     {
         repositoryBranch = buildSystem.TFBuild.Environment.Repository.SourceBranchName;
     }
+    else if (buildSystem.IsRunningOnGitHubActions)
+    {
+        repositoryBranch = buildSystem.GitHubActions.Environment.Workflow.Ref.Replace("refs/heads/", "");
+    }
 
     context.Information("Repository Branch: {0}" , repositoryBranch);
 

src/GitVersionCore/BuildServers/GitHubActions.cs

@@ -61,5 +61,7 @@ public override string GetCurrentBranch(bool usingDynamicRepos)
 
             return base.GetCurrentBranch(usingDynamicRepos);
         }
+
+        public override bool PreventFetch() => false;
     }
 }

src/GitVersionExe.Tests/GitVersionHelper.cs

@@ -50,6 +50,7 @@ params KeyValuePair<string, string>[] environments
                 { TravisCi.EnvironmentVariableName, null },
                 { Jenkins.EnvironmentVariableName, null },
                 { AzurePipelines.EnvironmentVariableName, null },
+                { GitHubActions.EnvironmentVariableName, null },
             };
 
             foreach (var environment in environments)