Support API url override

README.md

@@ -30,6 +30,15 @@ If not specified the root job folder will be used.
 #### `allow-external-github-orgs` (optional)
 A boolean value to allow external github orgs in the foreman manifest file.
 
+#### `github-api-url` (optional)
+
+Override for the GitHub API URL. By default GitHub Actions will supply this
+value as the current environment, which will usually be
+`https://api.github.com`.
+
+You shouldn't need to change unless working in GitHub Enterprise or a similar
+self-hosted environment.
+
 If not specified, external github orgs will not be allowed.
 ## License
 setup-foreman is available under the MIT license. See [LICENSE.txt](LICENSE.txt) or <https://opensource.org/licenses/MIT> for details.

src/main.ts

@@ -11,11 +11,14 @@ async function run(): Promise<void> {
     const versionReq: string = getInput("version");
     const githubToken: string = getInput("token");
     const workingDir: string = getInput("working-directory");
+    const githubApiUrl: string = getInput("github-api-url");
     const allowExternalGithubOrgs: string = getInput(
       "allow-external-github-orgs"
     ).toLowerCase();
 
-    const octokit = new GitHub(githubToken);
+    const octokit = new GitHub(githubToken, {
+      baseUrl: githubApiUrl
+    });
     const releases = await foreman.getReleases(octokit);
     const validReleases = foreman.filterValidReleases(releases)
     debug("Choosing release from GitHub API");