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docker-compose fails on host mashine

I have a few microservices runins on spring boot, each of them have they own postgres database. When I run docker-compose up on development windows mashin it works correctly. But when I deploy it on linux VPS host, spring can not connect to database. Individually (without environment variables) the images are launched on VPS.
Here is my docker-compose.yml
version: "3.9"
services:
gateway:
image: gateway:latest
container_name: gateway
ports:
- "8080:8080"
depends_on:
- postgres
environment:
- DATASOURCE_URL=jdbc:postgresql://postgres:5432/gateway_db
- DATASOURCE_USERNAME=postgres
- DATASOURCE_PASSWORD=postgres
- JPA_HIBERNATE_DDL_AUTO=update
restart: unless-stopped
networks:
- postgres
postgres:
image: postgres:14.4
container_name: gateway_db
environment:
POSTGRES_DB: "gateway_db"
POSTGRES_USER: "postgres"
POSTGRES_PASSWORD: "postgres"
volumes:
- pgdata:/var/lib/postgresql/data
expose:
- 5432
healthcheck:
test: [ "CMD-SHELL", "pg_isready -U postgres -d postgres" ]
interval: 10s
timeout: 5s
retries: 5
start_period: 10s
restart: unless-stopped
networks:
- postgres
volumes:
pgdata:
networks:
postgres:
driver: bridge
And this is my application.properties
spring.datasource.driver-class-name=org.postgresql.Driver
spring.sql.init.mode=always
spring.sql.init.platform=postgres
spring.datasource.url=${DATASOURCE_URL}
spring.datasource.username=${DATASOURCE_USERNAME}
spring.datasource.password=${DATASOURCE_PASSWORD}
spring.jpa.database=postgresql
spring.jpa.hibernate.ddl-auto=${JPA_HIBERNATE_DDL_AUTO}
So, here's spring logs from docker container on host machine
I would be very grateful for any help!

Spring Boot SQL with Docker - Could not connect to adress - Connection refused

I try to implement a SpringBoot Application with a MariaDB Connection running on Docker.
But unfortunately SpringBoot is not able to connect with the DB Container.
This is my docker-compose.yml:
version: "3.4"
services:
db:
image: mariadb:10.6
environment:
MYSQL_ROOT_PASSWORD: 'admin'
MYSQL_DATABASE: 'ghp_board'
MYSQL_USER: 'ghp_board_admin'
MYSQL_PASSWORD: 'ghp_board'
volumes:
- ./data/mariadb:/docker-entrypoint-initdb.d
ports:
- "33006:3306"
frontend:
build:
context: ./frontend
dockerfile: Dockerfile
ports:
- "8081:8080"
container_name: ghp_board_frontend
volumes:
- ./frontend:/usr/src/app/ghp_board_frontend
depends_on:
- db
backend:
build:
context: ./backend
dockerfile: Dockerfile
depends_on:
- db
ports:
- "8886:8080"
mailhog:
image: mailhog/mailhog:latest
ports:
- "8025:8025"
- "1025:1025"
And this is my application.properties:
spring.datasource.url=jdbc:mariadb://db:3306/ghp_board
spring.datasource.driverClassName=org.mariadb.jdbc.Driver
spring.datasource.username=ghp_board_admin
spring.datasource.password=ghp_board
logging.level.org.hibernate.SQL=debug
spring.flyway.enabled=false
spring.jpa.show-sql=true
spring.jpa.hibernate.ddl-auto=update
spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.MySQL5InnoDBDialect
The DB-Container is running. I can connect to it via docker-compose exec db /bin/bash and then mysql -u ghp_board_admin -p
But if I am running docker-compose up --build or gradlew clean build I will get the following error:
java.sql.SQLNonTransientConnectionException: Socket fail to connect to host:address=(host=db)(port=3306)(type=primary). db
Can anyone tell me what I did wrong?

Access images saved in a Docker Tomcat container

I have the following Docker project running on a Linux VM. When I log into localhost, thanks to the website, I can save a photo on the Tomcat container on the server. I want to access the images uploaded to Tomcat to make a backup. How can I do? Why is my code not working?
- ./volumes/tomcat:/usr/local/tomcat/webapps/
Below I report all my project:
/home/gi/Dropbox/SERVER/DOCKER-LINUX/ServerDocker02/https/localhost-rsa-cert.pem
/home/gi/Dropbox/SERVER/DOCKER-LINUX/ServerDocker02/https/localhost-rsa-key.pem
/home/gi/Dropbox/SERVER/DOCKER-LINUX/ServerDocker02/https/server.xml
/home/gi/Dropbox/SERVER/DOCKER-LINUX/ServerDocker02/tomcat/Dockerfile
FROM tomcat:9.0.63-jdk11
LABEL Author="Nome Cognome"
EXPOSE 8080
EXPOSE 8443
COPY ./serverfile/*.war /usr/local/tomcat/webapps/
CMD ["catalina.sh", "run"]
/home/gi/Dropbox/SERVER/DOCKER-LINUX/ServerDocker02/docker-compose.yaml
version: '3.8'
services:
postgresql-postgis:
...
pgadmin:
...
tomcat:
build: ./tomcat
image: image-tomcat-eb:v.1.0
container_name: container-tomcat-eb
ports:
- 6003:8080
- 7003:8443
volumes:
- ./https/localhost-rsa-cert.pem:/usr/local/tomcat/ssl/localhost-rsa-cert.pem
- ./https/localhost-rsa-key.pem:/usr/local/tomcat/ssl/localhost-rsa-key.pem
- ./https/server.xml:/usr/local/tomcat/conf/server.xml
- ./volumes/tomcat:/usr/local/tomcat/webapps/
depends_on:
- postgresql-postgis
- pgadmin
restart: on-failure
networks:
- eb
mysql:
...
phpmyadmin:
...
php:
...
volumes:
data-postgresql:
data-mysql:
networks:
eb:

Connection to localhost:5432 refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections. 2

I already tried everything i found, i know there are a few more questions about this but nothing worked.
I tried to change listen addresses from postgresql.conf, i tried changing methods to TRUST in pg_hba.conf, i tried to restart Postgresql servers...
When i execute docker compose-up my spring boot app works but is doesnt connect to the database, always saying that the port 5432 is already used.If i stop postgresql running on 5432 and i try to run again docker compose-up it says that 5432 is not found and it cannot connect, so basically i need to start it.
application.properties
spring.datasource.driver-class-name=org.postgresql.Driver
spring.datasource.username= postgres
spring.datasource.password=abc
spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.PostgreSQLDialect
spring.jpa.hibernate.ddl-auto=update
dockerfile-compose.yml
version: "3"
services:
postgres:
image: postgres:latest
network_mode: bridge
container_name: postgres
volumes:
- postgres-data:/var/lib/postgresql/data
expose:
- 5432
ports:
- 5432:5432
environment:
- POSTGRES_PASSWORD=abc
- POSTGRES_USER=postgres
- POSTGRES_DB=books
restart: unless-stopped
# APP*****************************************
springbootapp:
image: spring-app:latest
network_mode: bridge
container_name: spring-app
expose:
- 8080
ports:
- 8081:8080
restart: unless-stopped
depends_on:
- postgres
links:
- postgres
volumes:
postgres-data:
Dockerfile
FROM openjdk:12-jdk-alpine
VOLUME /tmp
EXPOSE 8081
RUN mkdir -p /app/
RUN mkdir -p /app/logs/
ADD target/spring-app-0.0.1-SNAPSHOT.jar /app/app.jar
ENTRYPOINT ["java","-Djava.security.egd=file:/dev/./urandom","-Dspring.profiles.active=container", "-jar", "/app/app.jar"]

Unable to connect to mysql in docker container from another docker container

I have two docker containers: mysql and spring boot service.
Service container is not connecting to mysql container(failing on the deploy) with following exception:
CommunicationsException: Communications link failure
So far I have tried using docker --link, docker networks, running everything using/without docker compose.
I am able to connect to DB container outside of docker.
Connection string: jdbc:mysql://db:3306/somedb
docker-compose.yml
version: '3.7'
services:
app:
build: .
restart: unless-stopped
ports:
- "80:8060"
links:
- db
depends_on:
- db
db:
image: "mysql:latest"
command: --default-authentication-plugin=mysql_native_password
environment:
- MYSQL_DATABASE=somedb
- MYSQL_ROOT_PASSWORD=somepassword
ports:
- "3306:3306"
volumes:
- /Users/someuser/someproject/mysql/data:/var/lib/mysql

I had the same problem earlier and i tried with by changing the mysql image version. Here is my compose yaml file where i am able to connect it with.
version: "3.0"
services:
spring-boot-container:
build: .
ports:
- "8086:8086"
links:
- mysql-standalone
mysql-standalone:
image: mysql:5.6
ports:
- "3307:3306"
environment:
MYSQL_ROOT_PASSWORD: password
MYSQL_DATABASE: springsecurity
MYSQL_USER: sa
MYSQL_PASSWORD: password

So in my service dockerfile I say:
ADD target/app-1.0-SNAPSHOT.jar /app-service.jar
RUN sh -c 'touch /app-service.jar'
But I forgot to rebuild jar after making changes in service config files
TL;DR I'm retarded