Cant connect dockerized springboot application to not dockerized postgres database (localhost)

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Im getting the connection refused error, but in my eclipse it connects with no problem. I wonder if it is not possible to connect to a database that hasnt been dockerized also or if its possible what should I do?

thise is my Dockerfile:

FROM openjdk:11
EXPOSE 8080
ADD target/permisos.jar permisos.jar
ENTRYPOINT ["java","-jar","/permisos.jar"]

this is my application.yml file:

spring:
  profiles:
    active: local
  jpa:
    database: POSTGRESQL
    show-sql: true
    hibernate:
      ddl-auto: none
  datasource:
    platform: postgres
    url: jdbc:postgresql://localhost:5432/permisosdb
    username: postgres
    password: postgres
    driverClassName: org.postgresql.Driver
docker spring java
1 Answers

The IP address of the host is host.docker.internal on, AFAIK, all modern Docker installations.

So your datasource URL should be

url: jdbc:postgresql://host.docker.internal:5432/permisosdb

If that doesn't work, try

url: jdbc:postgresql://172.17.0.1:5432/permisosdb
user_39248030
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