chore(api): use env var for base path url

.env.test

@@ -1,3 +1,4 @@
+API_BASE_PATH=/api/v1/homer
 GITLAB_SECRET=GITLAB_SECRET
 GITLAB_TOKEN=GITLAB_TOKEN
 NODE_ENV=test

README.md

@@ -164,6 +164,10 @@ Be sure to have all those installed:
 
 Create a `.env` file containing the following variables:
 
+- `API_BASE_PATH`
+
+  This is the base path that will be used to build the API URL to call homer, for example `https://homer.com/<API_BASE_PATH>/command`.
+
 - `GITLAB_SECRET`
 
   This is a user generated secret, so you can put any value.

src/start.ts

@@ -9,6 +9,7 @@ import { connectToDatabase } from '@/core/services/data';
 import { logger } from '@/core/services/logger';
 import { catchAsyncRouteErrors } from '@/core/utils/catchAsyncRouteErrors';
 import { REQUEST_BODY_SIZE_LIMIT } from './constants';
+import { getEnvVariable } from './core/utils/getEnvVariable';
 import { router } from './router';
 
 const PORT = 3000;
@@ -35,7 +36,7 @@ export async function start(): Promise<() => Promise<void>> {
       catchAsyncRouteErrors(stateRequestHandler)
     );
     app.use(securityMiddleware);
-    app.use('/api/v1/homer', router);
+    app.use(getEnvVariable('API_BASE_PATH'), router);
     app.use(errorMiddleware);
 
     const server = app.listen(PORT, async () => {