This program uses mongodb Database and set DB-name DB-root-user & DB-root-password as a ENV's in the docker-compose.yml

If you not use the ENV's for mongo (any security issues), You need to run mongo image and create new username & password and DB name Do it with the next commands It necessary to backend service that can connect to mongo container with specific credentials

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docker exec -it mongo bash

mongosh

use MyDB

db.createUser({ user: "Dani", pwd: "Dani3653", roles: [] })

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In case you want to build custom mongodb image, Do it with entrypoint file Create mongo-init.js file and set the default values for the mongodb container In this example you set new DB with name "MyDB" and username and password.

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db.createUser( { user: "Dani", pwd: "Dani3653", roles: [ { role: "readWrite", db: "MyDB" } ] } );

If you want to create custom mongodb contaner - use the next Dockerfile

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FROM mongo:4.4.18

COPY ./mongo-init.js /docker-entrypoint-initdb.d