LinuxServer Changes:
Update sample env vars and how RUN_OPTS are handled.
tvheadend Changes:
Don't confuse GCC with zero-length array
Fix FTBFS introduced by 7b95ba4cf9113ae8808b3e4a9425010b607dbaca
Link: https://tvheadend.org/issues/6173
Link: https://tvheadend.org/issues/6226
References: 7b95ba4cf9113ae8808b3e4a9425010b607dbaca
Signed-off-by: Cédric Schieli cschieli@gmail.com