Enable self-contained binary mode (#160)

* Build self-contained Debian linux-x64 binary

* Update initscripts to use self-contained binary

The binary is declared in the units intentionally rather than using
the variable extrapolation from before, to avoid confusion since
these can't really be moved reasonably.

* With combined binary name, use pgrep instead

* Remove dotnet-runtime dependency

* Move the compiled scb to usr/bin

* Update binary location for upstart/systemd

* Move binary path; fix pidfile handling

* Entirely remove the temporary usr/ dir

* Don't move the compiled binary

* Create /usr/bin symlink

* Use the variable here

* Update architecture to any

* Add libcurl4-openssl build dependency

* Update the build Dockerfile to install builddeps

debian/postinst

@@ -37,6 +37,9 @@ case "$1" in
 
     chmod +x ${JELLYFIN_DIR}/restart.sh > /dev/null 2>&1 || true
 
+    # Install jellyfin symlink into /usr/bin
+    ln -sf /usr/lib/jellyfin/bin/jellyfin /usr/bin/jellyfin
+
     ;;
     abort-upgrade|abort-remove|abort-deconfigure)
     ;;