first commit

Signed-off-by: Luca Stocchi <lstocchi@redhat.com>

src/index.ts

@@ -0,0 +1,69 @@
+import * as core from '@actions/core';
+import * as io from '@actions/io';
+import { BuildahCli, BuildahConfigSettings } from './buildah';
+
+/**
+ * 1. Buildah only works on Linux as the docker action
+ * 2. Does this action also need to setup buildah? 
+ * 3. Does this action also have the ability to push to a registry?
+ * 
+ */
+export async function run(): Promise<void> {
+    const baseImage = core.getInput('base-image');
+    const content = core.getInput('content');
+    const entrypoint = await getInputList('entrypoint');
+    const port = core.getInput('port');
+    const newImageName = core.getInput('new-image-name');
+    const runnerOS = process.env.RUNNER_OS;
+
+    if (runnerOS !== 'linux') {
+        throw new Error(`Only supported on linux platform`);
+    }
+    // get buildah cli
+    const buildahPath = await io.which('buildah', true);    
+
+    // create image
+    const cli: BuildahCli = new BuildahCli(buildahPath);
+    const creationResult = await cli.from(baseImage);
+    if (creationResult.succeeded === false) {
+        return Promise.reject(new Error(creationResult.reason));
+    }
+    const containerId = creationResult.output;
+
+    const copyResult = await cli.copy(containerId, content);
+    if (copyResult.succeeded === false) {
+        return Promise.reject(new Error(copyResult.reason));
+    }
+
+    const configuration: BuildahConfigSettings = {
+        entrypoint: entrypoint,
+        port: port
+    }
+    const configResult = await cli.config(containerId, configuration);
+    if (configResult.succeeded === false) {
+        return Promise.reject(new Error(configResult.reason));
+    }
+
+    const commit = await cli.commit(containerId, newImageName, ['--squash']);
+    if (commit.succeeded === false) {
+        return Promise.reject(new Error(commit.reason));
+    }
+
+    core.setOutput('image', newImageName);
+}
+
+export async function getInputList(name: string, ignoreComma?: boolean): Promise<string[]> {
+    const items = core.getInput(name);
+    if (items == '') {
+      return [];
+    }
+    return items
+      .split(/\r?\n/)
+      .filter(x => x)
+      .reduce<string[]>(
+        (acc, line) => acc.concat(!ignoreComma ? line.split(',').filter(x => x) : line).map(pat => pat.trim()),
+        []
+      );
+  }
+
+run().catch(core.setFailed);