Refactor the runDockerContainer function to a ContainerRunner interface.

Signed-off-by: Dominik Henneke <dominik.henneke@sda-se.com>

packages/backend/src/plugins/scaffolder.ts

@@ -14,7 +14,10 @@
  * limitations under the License.
  */
 
-import { SingleHostDiscovery } from '@backstage/backend-common';
+import {
+  DockerContainerRunner,
+  SingleHostDiscovery,
+} from '@backstage/backend-common';
 import { CatalogClient } from '@backstage/catalog-client';
 import {
   CookieCutter,
@@ -34,8 +37,11 @@ export default async function createPlugin({
   database,
   reader,
 }: PluginEnvironment): Promise<Router> {
-  const cookiecutterTemplater = new CookieCutter();
-  const craTemplater = new CreateReactAppTemplater();
+  const dockerClient = new Docker();
+  const containerRunner = new DockerContainerRunner({ dockerClient });
+
+  const cookiecutterTemplater = new CookieCutter({ containerRunner });
+  const craTemplater = new CreateReactAppTemplater({ containerRunner });
   const templaters = new Templaters();
 
   templaters.register('cookiecutter', cookiecutterTemplater);
@@ -44,8 +50,6 @@ export default async function createPlugin({
   const preparers = await Preparers.fromConfig(config, { logger });
   const publishers = await Publishers.fromConfig(config, { logger });
 
-  const dockerClient = new Docker();
-
   const discovery = SingleHostDiscovery.fromConfig(config);
   const catalogClient = new CatalogClient({ discoveryApi: discovery });
 
@@ -55,7 +59,6 @@ export default async function createPlugin({
     publishers,
     logger,
     config,
-    dockerClient,
     database,
     catalogClient,
     reader,

packages/backend/src/plugins/techdocs.ts

@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+import { DockerContainerRunner } from '@backstage/backend-common';
 import {
   createRouter,
   Generators,
@@ -35,9 +36,14 @@ export default async function createPlugin({
     reader,
   });
 
+  // Docker client (conditionally) used by the generators, based on techdocs.generators config.
+  const dockerClient = new Docker();
+  const containerRunner = new DockerContainerRunner({ dockerClient });
+
   // Generators are used for generating documentation sites.
   const generators = await Generators.fromConfig(config, {
     logger,
+    containerRunner,
   });
 
   // Publisher is used for
@@ -51,14 +57,10 @@ export default async function createPlugin({
   // checks if the publisher is working and logs the result
   await publisher.getReadiness();
 
-  // Docker client (conditionally) used by the generators, based on techdocs.generators config.
-  const dockerClient = new Docker();
-
   return await createRouter({
     preparers,
     generators,
     publisher,
-    dockerClient,
     logger,
     config,
     discovery,