ci(source): change startup parsing to eval

exec does not support startups that are more keen of scripts with multiple breaks and statements. Ark or 7d2d are examples of this.

ref https://github.com/parkervcp/eggs/pull/1420

games/source/entrypoint.sh

@@ -36,10 +36,6 @@ export INTERNAL_IP
 # Switch to the container's working directory
 cd /home/container || exit 1
 
-# Convert all of the "{{VARIABLE}}" parts of the command into the expected shell
-# variable format of "${VARIABLE}" before evaluating the string and automatically
-# replacing the values.
-PARSED=$(echo "${STARTUP}" | sed -e 's/{{/${/g' -e 's/}}/}/g' | eval echo "$(cat -)")
 
 ## just in case someone removed the defaults.
 if [ "${STEAM_USER}" == "" ]; then
@@ -65,8 +61,9 @@ else
     echo -e "Not updating game server as auto update was set to 0. Starting Server"
 fi
 
-# Display the command we're running in the output, and then execute it with the env
-# from the container itself.
-printf "\033[1m\033[33mcontainer@pterodactyl~ \033[0m%s\n" "$PARSED"
-# shellcheck disable=SC2086
-exec env ${PARSED}
+# Replace Startup Variables
+MODIFIED_STARTUP=$(echo ${STARTUP} | sed -e 's/{{/${/g' -e 's/}}/}/g')
+echo -e ":/home/container$ ${MODIFIED_STARTUP}"
+
+# Run the Server
+eval ${MODIFIED_STARTUP}