me@machine:~/MastodonToTwitter> docker-compose run --rm mtt
Creating network "mastodontotwitter_default" with the default driver
Building mtt
Step 1/7 : FROM python:3.6-alpine
3.6-alpine: Pulling from library/python
c9b1b535fdd9: Pull complete
2cc5ad85d9ab: Pull complete
3ef3538413cf: Pull complete
ca9525f635d9: Pull complete
e99c5e32063e: Pull complete
Digest: sha256:565c566c317c077fdc520a5dcee8374339bda70ddd9f2dfad9499cde45fb5831
Status: Downloaded newer image for python:3.6-alpine
 ---> 781b53c4648c
Step 2/7 : MAINTAINER Tyler Britten
 ---> Running in f87747ecb928
Removing intermediate container f87747ecb928
 ---> 401020920136
Step 3/7 : RUN mkdir -p /usr/src/app
 ---> Running in 232de936f2b0
Removing intermediate container 232de936f2b0
 ---> 7436a9c49692
Step 4/7 : WORKDIR /usr/src/app
 ---> Running in bf7db699300e
Removing intermediate container bf7db699300e
 ---> 418797a651c2
Step 5/7 : ADD ["requirements.txt", "__init__.py", "mtt/", "/usr/src/app/"]
 ---> bc2338f2bd94
Step 6/7 : RUN pip3 install --no-cache-dir -r requirements.txt &&     touch mtt_mastodon_client.secret           mtt_mastodon_user.secret           mtt_mastodon_server.secret           mtt_twitter.secret
 ---> Running in 8d9fcc8209ae
Collecting git+https://github.com/bear/python-twitter.git (from -r requirements.txt (line 6))
  Cloning https://github.com/bear/python-twitter.git to /tmp/pip-req-build-9f2_012x
  Running command git clone -q https://github.com/bear/python-twitter.git /tmp/pip-req-build-9f2_012x
  ERROR: Error [Errno 2] No such file or directory: 'git': 'git' while executing command git clone -q https://github.com/bear/python-twitter.git /tmp/pip-req-build-9f2_012x
ERROR: Cannot find command 'git' - do you have 'git' installed and in your PATH?
ERROR: Service 'mtt' failed to build: The command '/bin/sh -c pip3 install --no-cache-dir -r requirements.txt &&     touch mtt_mastodon_client.secret           mtt_mastodon_user.secret           mtt_mastodon_server.secret           mtt_twitter.secret' returned a non-zero code: 1