contrib/packaging/docker/fedora29

py3: write out hgextindex as bytes in setup.py

I hit this trying to build the py2exe target using python3, just to see what
would happen.  After commenting out `py2exe.Distribution` in setup.py and
pointing to a local copy of py2exe that supports python3[1], it complained that
`out` was bytes, not str.

[1] https://github.com/albertosottile/py2exe/releases/tag/v0.9.3.0

FROM fedora:29

RUN groupadd -g 1000 build && \
    useradd -u 1000 -g 1000 -s /bin/bash -d /build -m build

RUN dnf install -y \
	gcc \
	gettext \
	make \
	python-devel \
	python-docutils \
	rpm-build

# For creating repo meta data
RUN dnf install -y createrepo