Following the INSTALL.rst docker-compose fails

[jderdak]

I tried building the project while following the instructions in the INSTALL.rst.

When executing

$ docker-compose up -d

I get the following error:

  File "/opt/lib/python2.7/site-packages/pip/_internal/locations.py", line 107 
  assert not (user and prefix), f"user={user} prefix={prefix}"  
                                                             ^SyntaxError: invalid syntax  

....
....
....

Traceback (most recent call last):                                                                                                                                                                         │··································
  File "/opt/bin/pip", line 9, in <module>                                                                                                                                                                 │··································
    load_entry_point('pip==21.0', 'console_scripts', 'pip')()                                                                                                                                              │··································
  File "/opt/local/lib/python2.7/site-packages/pkg_resources.py", line 353, in load_entry_point                                                                                                            │··································
    return get_distribution(dist).load_entry_point(group, name)                                                                                                                                            │··································
  File "/opt/local/lib/python2.7/site-packages/pkg_resources.py", line 2321, in load_entry_point                                                                                                           │··································
    return ep.load()                                                                                                                                                                                       │··································
  File "/opt/local/lib/python2.7/site-packages/pkg_resources.py", line 2048, in load                                                                                                                       │··································
    entry = __import__(self.module_name, globals(),globals(), ['__name__'])                                                                                                                                │··································
  File "/opt/local/lib/python2.7/site-packages/pip/_internal/cli/main.py", line 60                                                                                                                         │··································
    sys.stderr.write(f"ERROR: {exc}")                                                                                                                                                                      │··································
                                   ^                                                                                                                                                                       │··································
SyntaxError: invalid syntax                                                                                                                                                                                │··································
The command '/bin/sh -c source /opt/bin/activate     && pip install --upgrade pip     && pip install --upgrade setuptools     && pip install pycparser==2.13     && pip install Cython==0.21.2     && pip i│··································
nstall -r requirements.txt' returned a non-zero code: 1                                                                                                                                                    │··································
ERROR: Service 'backend' failed to build                                                                                                                                                                   │··································
root@ubuntu-poliscoops:~/poliscoops/docker#       

System specs of the host system were:

Date: 25.01.21
Freshly setup Ubuntu 20.04
docker-compose 1.28.0
docker 19.03.8