Update docker build process

Dockerfile

@@ -1,22 +1,27 @@
-FROM openjdk:17-jdk-slim
+FROM eclipse-temurin:17-jdk-alpine as build
 
-RUN apt-get -y update
-RUN apt-get -y install netcat
-RUN apt-get -y install curl
+COPY .mvn/ .mvn
+COPY mvnw pom.xml ./
+COPY src ./src
+COPY bot.properties.example bot.properties ./
+
+RUN ["chmod", "+x", "./mvnw"]
+RUN ./mvnw install
+
+
+FROM eclipse-temurin:17-jre-alpine
+
+RUN apk add netcat-openbsd
+RUN apk add curl
 
 WORKDIR /app
 
 ARG API_PORT=9000
 EXPOSE ${API_PORT}
 
-COPY .mvn/ .mvn
-COPY mvnw pom.xml ./
-COPY src ./src
 COPY bot.properties.example bot.properties ./
 COPY startup.sh ./
-
-RUN ["chmod", "+x", "./mvnw"]
-RUN ./mvnw install
+COPY --from=build /target/netneutrality-jar-with-dependencies.jar ./
 
 RUN ["chmod", "+x", "./startup.sh"]
 CMD ["./startup.sh"]

docker-compose.yml

@@ -2,7 +2,7 @@ version: '3.3'
 
 services:
   db:
-    image: mariadb:10.7
+    image: mariadb:lts
     container_name: db
     restart: unless-stopped
     volumes:

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"