New Dockerfile

[MaxwellDupre]

At this time we are not actively adding labs to this repository. Our focus is on training.play-with-docker.com where new lab and workshop oriented content is being added. We welcome fixes to existing content. For any new content you wish to contribute, please use this repository:https://github.com/play-with-docker/play-with-docker.github.io. Issues filed against the repo may or may not be fixed.

Here's my Dockerfile that works:
FROM alpine

Install python/pip

ENV PYTHONUNBUFFERED=1
RUN apk add --update --no-cache python3 && ln -sf python3 /usr/bin/python
RUN python3 -m ensurepip
RUN pip3 install --no-cache --upgrade pip setuptools
#RUN apk add py3-setuptools
#RUN apk add --update py-pip
#RUN apk add --update py3-pip
COPY requirements.txt /usr/src/app/
RUN pip install --no-cache-dir -r /usr/src/app/requirements.txt
COPY app.py /usr/src/app/
COPY templates/index.html /usr/src/app/templates/
EXPOSE 5000
CMD ["python", "/usr/src/app/app.py"]

Oh and the links dont work either way too old, try something like:
"https://images.unsplash.com/photo-1580684822403-559fa119d2f6?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=913&q=80",
"https://images.unsplash.com/photo-1550353127-b0da3aeaa0ca?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=2551&q=80"

If you do move on then why not just link to new stuff instead of leaving old buggy stuff lying around. It not how good housekeeping works!