Update docker build process

startup.sh

@@ -1,10 +1,10 @@
-#!/bin/bash
+#!/bin/sh
 
-function prop {
+prop() {
     grep "${1}" bot.properties | cut -d'=' -f2
 }
 
-function _term() {
+_term() {
   echo "Caught SIGTERM/SIGINT signal, graceful shutdown of bot.."
   if [ -z "$pid" ]; then
     echo "Bot isn't running, exiting."
@@ -16,10 +16,10 @@ function _term() {
   fi
 }
 
-trap _term SIGTERM
-trap _term SIGINT
+trap _term TERM
+trap _term INT
 
-if [ ! -f /bin/nc ]; then
+if [ ! -f /usr/bin/nc ]; then
     echo "nc not found. Exiting."
     exit 1
 fi
@@ -40,9 +40,9 @@ echo "Waiting 10 seconds for database to start.."
 sleep 10
 
 echo "Checking if MySQL / MariaDB is started.."
-if /bin/nc -z "$MYSQL_HOST" "$MYSQL_PORT"; then
+if /usr/bin/nc -z "$MYSQL_HOST" "$MYSQL_PORT"; then
   echo "Database OK. Starting bot..";
-  /usr/local/openjdk-17/bin/java -jar target/netneutrality-jar-with-dependencies.jar &
+  /opt/java/openjdk/bin/java -jar /app/netneutrality-jar-with-dependencies.jar &
 
   pid=$!
   wait "$pid"