Updated for the modern day versions

services/api/Dockerfile

@@ -20,4 +20,4 @@ RUN set -eux \
     && rm -rf /root/.cache/pip
 
 # copy project
-COPY . /opt/fast_api/
+COPY ./app /opt/fast_api/

services/api/app/main.py

@@ -1,3 +1,4 @@
+import datetime as dt
 from fastapi import FastAPI
 
 app = FastAPI()
@@ -5,4 +6,5 @@ app = FastAPI()
 
 @app.get('/ping')
 def pong():
-    return {"ping": "pong!"}
+    now = dt.datetime.now(dt.timezone.utc)
+    return {"ping": "pong!", "now": now}

services/api/dev_requirements.txt

@@ -6,30 +6,28 @@
 #
 appdirs==1.4.3            # via black
 attrs==19.3.0             # via black, pytest
-black==19.10b0
+black==19.10b0            # via -r dev_requirements.in
 certifi==2019.11.28       # via requests
 chardet==3.0.4            # via requests
 click==7.0                # via black, pip-tools
 entrypoints==0.3          # via flake8
-flake8==3.7.9
+flake8==3.7.9             # via -r dev_requirements.in
 idna==2.8                 # via requests
-importlib-metadata==1.5.0  # via pluggy, pytest
 mccabe==0.6.1             # via flake8
 more-itertools==8.2.0     # via pytest
 packaging==20.1           # via pytest
 pathspec==0.7.0           # via black
-pip-tools==4.4.1
+pip-tools==4.4.1          # via -r dev_requirements.in
 pluggy==0.13.1            # via pytest
 py==1.8.1                 # via pytest
 pycodestyle==2.5.0        # via flake8
 pyflakes==2.1.1           # via flake8
 pyparsing==2.4.6          # via packaging
-pytest==5.3.5
+pytest==5.3.5             # via -r dev_requirements.in
 regex==2020.1.8           # via black
-requests==2.22.0
+requests==2.22.0          # via -r dev_requirements.in
 six==1.14.0               # via packaging, pip-tools
 toml==0.10.0              # via black
 typed-ast==1.4.1          # via black
 urllib3==1.25.8           # via requests
 wcwidth==0.1.8            # via pytest
-zipp==2.1.0               # via importlib-metadata

services/api/requirements.txt

@@ -4,16 +4,16 @@
 #
 #    pip-compile requirements.in
 #
-asyncpg==0.20.1
+asyncpg==0.20.1           # via -r requirements.in, databases
 click==7.0                # via uvicorn
-databases[postgresql]==0.2.6
-fastapi==0.48.0
+databases[postgresql]==0.2.6  # via -r requirements.in
+fastapi==0.48.0           # via -r requirements.in
 h11==0.9.0                # via uvicorn
 httptools==0.0.13         # via uvicorn
 psycopg2-binary==2.8.4    # via databases
 pydantic==1.4             # via fastapi
-sqlalchemy==1.3.13
+sqlalchemy==1.3.13        # via -r requirements.in, databases
 starlette==0.12.9         # via fastapi
-uvicorn==0.11.2
+uvicorn==0.11.2           # via -r requirements.in
 uvloop==0.14.0            # via uvicorn
 websockets==8.1           # via uvicorn