pip - Python requirements.txt use local git dependency -


i have small python flask app on centos-7 vm runs in docker, along nginx reverse proxy. requirements.txt pulls in several external utilities using git+ssh such as: 

git+ssh://path-to-our-repo/some-utility.git

i had make change utility, cloned locally, , need app use local version. cloned , modified utility in local directory:

/var/work/some-utility

in requirements.txt changed entry to:

git+file:///var/work/some-utility

but when try run app 

sudo docker-compose

i error message

invalid requirement: 'git+file:///var/work/some-utility' looks path. exist ?

how can use local copy of "some-utility" ?

i tried:

git+file:///var/work/some-utility#egg=someutility

but produced same error.

i looked @ pip install local git repository.

this related question:

https://stackoverflow.com/questions/7225900/how-to-pip-install-packages-according-to-requirements-txt-from-a-local-directory?rq=1

i suppose people why not check in development branch of some-utility corporate git repo, in case not have privileges that.

or maybe problem related docker, , need map some-utility folder docker container, , use path? docker noob.

--- edit ---

thank larsks answer. tried add some-utility folder docker-compose.yml:

volumes:   - ./some-utility:/usr/local/some-utility

and changed requirements.txt to

git+file:///usr/local/some-utility

but our local git repo went down maintenance, have wait bit come try this.

=== edit 2 ===

after made above changes, following error when running docker-compose when tries build endpoint app:

cloning file:///usr/local/some-utility /tmp/pip-yj9xxtae-build fatal: '/usr/local/some-utility' not appear git repository

but /usr/local/some-utility folder contain cloned some-utility repo, , can go there , run git status.

if you're running pip install inside container, of course /var/work/some-utility needs available inside container.

you can expose directory inside container using host volume mount, this:

docker run -v /var/work/some-utility:/var/work/some-utility ...

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