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Modify your db config file to use an alias instead of localhost: connectionURL="jdbc:postgresql://DB_ALIAS/admin?stringtype=unspecified"Then add the DB_ALIAS to the container's hosts : $ sudo docker run -add-host DB_ALIAS:192.168.5.1 -it. Edit the file /etc/hosts to point the localhost to docker host ip: $ sudo vim /etc/hosts.Enter your container: $ sudo docker exec -it /bin/bash.Get your docker host ip： $ sudo docker inspect -f ''.Change the localhost of your docker host ip inside the container If you wanna hardcode the "localhost:5432" inside your config xml, the easiest way is creating your container with the option "-net=host": $ sudo docker run -net=host -it. Then you don't have 5432 listening in your container: $ sudo docker exec nc -v -z localhost 5432 Cat your container's /etc/hosts $ sudo docker exec -it cat /etc/hostsįor docker networks is bridge by default, the localhost inside points to container itself( Docker default bridge network).
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