Add option to serve local archive files

Set an environment variable in the docker compose file, then reference
that variable in main.py to mount the local archive so that the links
generated by auto-archiver will work correctly. Fixes #8

docker-compose.yml

@@ -14,6 +14,7 @@ services:
     environment:
       - CELERY_BROKER_URL=redis://:${REDIS_PASSWORD}@redis:6379/0
       - CELERY_RESULT_BACKEND=redis://:${REDIS_PASSWORD}@redis:6379/0
+      - SERVE_LOCAL_ARCHIVE=/app/local_archive # See orchestration.yaml local_storage.save_to
     depends_on:
       - redis
 

src/main.py

@@ -44,6 +44,11 @@ Instrumentator().instrument(app).expose(app, dependencies=[Depends(get_basic_aut
 
 app.mount("/static", StaticFiles(directory="static"), name="static")
 
+SERVE_LOCAL_ARCHIVE = os.environ.get("SERVE_LOCAL_ARCHIVE", "")
+if len(SERVE_LOCAL_ARCHIVE) > 1 and os.path.isdir(SERVE_LOCAL_ARCHIVE):
+    logger.info(f"mounting local archive {SERVE_LOCAL_ARCHIVE}")
+    app.mount(SERVE_LOCAL_ARCHIVE, StaticFiles(directory=SERVE_LOCAL_ARCHIVE), name=SERVE_LOCAL_ARCHIVE)
+
 def get_db():
     session = SessionLocal()
     try: yield session
@@ -186,4 +191,4 @@ async def on_startup():
 @repeat_every(seconds=60 * 60)  # 1 hour
 async def on_startup():
     db: Session = next(get_db())
-    crud.upsert_user_groups(db)
+    crud.upsert_user_groups(db)