fix coding style

images/fastapi/Dockerfile

@@ -26,6 +26,6 @@ USER "${USER_NAME}"
 COPY ./src/* .
 
 RUN python3 -m pip install --upgrade pip && \
-    python3 -m pip install --upgrade hypercorn uvicorn fastapi
+    python3 -m pip install --upgrade hypercorn uvicorn fastapi elastic-apm
 
 ENTRYPOINT ["/bin/bash", "/docker-entrypoint.sh"]

images/fastapi/src/app.py

@@ -1,8 +1,25 @@
 from fastapi import FastAPI
+from elasticapm.contrib.starlette import make_apm_client, ElasticAPM
+import os
+
+apm_server = os.getenv('APM_SERVER') or 'apm:8200'
+service_name = os.getenv('SERVICE_NAME') or 'fastapi'
+env_name = os.getenv('ENV_NAME') or 'staging'
+
+apm = make_apm_client({
+    'SERVER_URL': apm_server,
+    'SERVICE_NAME': service_name,
+    'ENVIRONMENT': env_name,
+    'SERVER_TIMEOUT': '5s',
+    'ENABLED': 'true',
+    'LOG_LEVEL': 'trace',
+    'LOG_FILE_SIZE': '100mb'
+})
 
 app = FastAPI()
+app.add_middleware(ElasticAPM, client=apm)
 
 
-@app.get("/")
-async def root():
-    return {"message": "Hello world!"}
+@app.get('/')
+def read_root():
+    return 'fastapi'