I have a Dockerfile and docker-compose.yml that I developed on OSX. It looks like this:
cat Dockerfile:
FROM alpine:3.7
ADD ./app /home/app/
WORKDIR /home/app/
RUN apk add --no-cache postgresql-dev gcc python3 python3-dev musl-dev && \
    python3 -m ensurepip && \
    rm -r /usr/lib/python*/ensurepip && \
    pip3 install --upgrade pip setuptools && \
    rm -r /root/.cache && \
    pip3 install -r requirements.txt
EXPOSE 5000
ENTRYPOINT ["python3", "app.py"]
cat docker-compose.yml:
version: "3"
services:
  web:
    build: .
    ports:
      - "5000:5000"
    volumes:
      - ./app/:/home/app/
    depends_on:
      - db
  db:
    image: postgres:10
    environment:
      - POSTGRES_USER=testusr
      - POSTGRES_PASSWORD=password
      - POSTGRES_DB=testdb
    expose:
      - 5432
I then start via: docker-compose up --build -d and open the web browser on port 5000, it shows a form (as expected). Again, this works perfect on OSX. 
However, on Windows 10 it just shows a blank page. And docker port <CONTAINER> shows 5000/tcp -> 0.0.0.0:5000 so I know it's bound to the right port. 
Additionally, if I docker logs -f <python container> it doesn't show the request ever getting to the container. Normally a new line is printed (w/status code) for each flask/nginx response. In this case it looks like it's not even getting to the python application container. 
So, any idea why this doesn't work on Windows?
 
    