ERROR: Directory is not installable. Neither 'setup.py' nor 'pyproject.toml'

Does this work?

You can create a new folder e.g. lib, and run this command:

pip3 install <your_python_module_name> -t lib/

Would suggest making the path explicit to requirements.txt, e.g. ./requirements.txt if you're running the command in the same directory

Also may need to add a basic setup.py to the folder where you're trying to install. The pip docs mention that this will happen if there's no setup.py file:

When looking at the items to be installed, pip checks what type of item each is, in the following order:

1. Project or archive URL.
2. Local directory (which must contain a setup.py, or pip will report an error).
3. Local file (a sdist or wheel format archive, following the naming conventions for those formats).
4. A requirement, as specified in PEP 440.

https://pip.pypa.io/en/stable/cli/pip_install/#argument-handling

Please try this:

   ADD requirements.txt ./
   pip install -r requirements.txt --no-deps -t python/lib/python3.6/site-packages/

syntax: ADD source destination

'ADD requirements.txt ./' adds requirements.txt (assumed to be at the cwd) to the docker image's './' folder.

Thus creating a layer from which the daemon has the context to the location of requirements.txt in the docker image.

More about it in dockerfile-best-practices

you can change your directory as follow

import os
os.chdir(path)

instead of:

cd path

also try to use:

!pip freeze > requirements.txt

instead of:

pip install -r requirements.txt

then execute your code:

!pip install .

or

!pip install -e .

in conclusion try this:

import os
os.chdir(path)
!pip freeze > requirements.txt
!pip install .