Check that open() calls for reading and writing use binary modes
Use alpine version with py3-pip package
Use python3 in Dockerfile CMD
Remove sys.setdefaultencoding() "hack"
Simplify ensure_directory() in common.common package
Adds a built-in "youtube-manual" location which is like "manual" except that it only works
with youtube URLs and populates the video_id column.
The intent is so that we can have playlist_manager manage videos we upload manually,
while still being able to distinguish between that and other manual links that shouldn't
be included (eg. links to third party youtube videos).
This is set when setting a manual link in thrimbletrimmer with a new checkbox, default off.
When comparing old and new video tags, it errors because it's a list, not string.
We change it to apply the transforms to all tags in the list, and also ignore changes in list ordering.
By carefully ensuring most of our dockerfiles are identical in their first few layers,
we only need to build those layers once instead of every time.
In particular, we move installing gevent to before installing common,
so that even when common changes gevent doesn't need to be reinstalled.
This is important because gevent takes ages to install.
Also fixes segment_coverage, which wasn't being installed.
This differs from the existing reset row by only suceeding if the upload is not
in finalizing.
We also make some changes to cutter to handle this situation gracefully.
Any endpoints that don't need a DB conn will still work fine.
Notably, this includes /defaults, which is needed for
thrimbletrimmer to work in a non-specific-row mode.
This accomplishes two things:
1. It allows thrimshim to properly validate length restrictions (not implemented yet)
2. It means that the database has a record of the values actually written for each of these rows,
instead of that information depending on how the cutter was configured at the time.