Fedora 29 is no longer available, and I need to rebuild these images so
libpcre is pre-downloaded as a subproject.
Update them to Fedora 31, which is what we use in `fedora.Dockerfile`.
This should allow some blobs to be shared in the container repository.
This isn’t the latest Fedora release, but I don’t want to go through the
hassle of updating all the CI images to F33 right now in addition to
updating the subproject caches.
`python-unversioned-command` is needed because the Android NDK calls
`python` without a version number. F29 must have installed this already.
The Android NDK setup appears to be OK with Python 3.
Signed-off-by: Philip Withnall <pwithnall@endlessos.org>
Helps: #962
Fedora 27 was EOL'ed on November 2018.
We move to Fedora 28 because the Android NDK requires Python 2 and
probably other things, and bumping to Fedora 29 is going to be more
painful.
The Fedora image we use contains Android bits that ought to go into
their own Docker container. This avoids having a massive Docker image
that gloms everything and is harder to update.
We reuse the same Docker image we used for Fedora, to avoid regressing.
