Hi, when running the front-proxy example on a laptop, I get the following error on step 3/8:

/bin/sh: pip3: not found
ERROR: Service 'service1' failed to build: The command '/bin/sh -c pip3 install -q Flask==0.11.1 requests==2.18.4' returned a non-zero code: 127

I found on Dockerfile-service file, on lines 3 and 4:

RUN apk update && apk add python3 bash curl
RUN pip3 install -q Flask==0.11.1 requests==2.18.4

However, to run pip3, the correct package to add is named: py3-pip (not python3).

If I edit and change the dockerfile-service file, the dockers seem to build correctly.

When doing docker-compose ps, I still got an error saying:
front-proxy_front-envoy_1 status: Exit 1
front-proxy_service1_1 status: Exit 127
front-proxy_service2_1 status: Exit 127

So the example seems to be failing somewhere else also...