Switch to OpenJ9 for container

Dockerfile

@@ -8,8 +8,7 @@ COPY --chown=gradle:gradle . /home/gradle/src
 WORKDIR /home/gradle/src
 RUN /home/gradle/src/gradlew --console=plain --no-daemon bootJar
 
-FROM openjdk:14-jdk-slim
+FROM adoptopenjdk:openj9
 EXPOSE 8080
 COPY --from=builder /home/gradle/src/api/build/libs/api.jar twigs-api.jar
-CMD /usr/local/openjdk-14/bin/java $JVM_ARGS -jar /twigs-api.jar
-
+CMD /opt/java/openjdk/bin/java $JVM_ARGS -jar /twigs-api.jar

docker-compose.yml

@@ -1,31 +1,33 @@
 version: "3.3"
 
 services:
-    twigs:
-        build: .
-        ports:
-            - "8080:8080"
-        depends_on:
-            - db
-        environment:
-            SPRING_DATASOURCE_URL: jdbc:mysql://db:3306/budget
-            SPRING_JPA_HIBERNATE_DDL-AUTO: update
-            SERVER_TOMCAT_MAX-THREADS: 5
-            TWIGS_CORS_DOMAINS: "http://localhost:4200"
-        networks:
-            - twigs
+  twigs:
+    build: .
+    ports:
+      - "8080:8080"
+    depends_on:
+      - db
+    environment:
+      SPRING_DATASOURCE_URL: "jdbc:mysql://db:3306/budget?useSSL=false"
+      SPRING_JPA_HIBERNATE_DDL-AUTO: update
+      SERVER_TOMCAT_MAX-THREADS: 5
+      TWIGS_CORS_DOMAINS: "http://localhost:4200"
+    networks:
+      - twigs
+    command: sh -c "sleep 5 && /opt/java/openjdk/bin/java $JVM_ARGS -jar /twigs-api.jar"
 
-    db:
-        image: mysql:5
-        ports:
-            - "3306:3306"
-        environment:
-            MYSQL_RANDOM_ROOT_PASSWORD: "yes"
-            MYSQL_DATABASE: budget
-            MYSQL_USER: budget
-            MYSQL_PASSWORD: budget
-        networks:
-            - twigs
+  db:
+    image: mysql:5.7
+    ports:
+      - "3306:3306"
+    environment:
+      MYSQL_RANDOM_ROOT_PASSWORD: "yes"
+      MYSQL_DATABASE: budget
+      MYSQL_USER: budget
+      MYSQL_PASSWORD: budget
+    networks:
+      - twigs
+    hostname: db
 
 networks:
-    twigs:
+  twigs: