fix: oses workflow migration

fix building oses images after migrating them over

oses/debian/entrypoint.sh

@@ -0,0 +1,12 @@
+#!/bin/bash
+cd /home/container
+
+# Make internal Docker IP address available to processes.
+export INTERNAL_IP=`ip route get 1 | awk '{print $NF;exit}'`
+
+# Replace Startup Variables
+MODIFIED_STARTUP=$(echo -e ${STARTUP} | sed -e 's/{{/${/g' -e 's/}}/}/g')
+echo -e ":/home/container$ ${MODIFIED_STARTUP}"
+
+# Run the Server
+eval ${MODIFIED_STARTUP}

oses/ubuntu/Dockerfile

@@ -1,4 +1,4 @@
-FROM  ubuntu:20.04
+FROM  ubuntu:18.04
 
 LABEL author="Michael Parker" maintainer="parker@pterodactyl.io"