This pull request adds the necessary environment variables for configuring the database in the paperless-server.service file. The PAPERLESS_DBENGINE, PAPERLESS_DBHOST, PAPERLESS_DBNAME, PAPERLESS_DBUSER, and PAPERLESS_DBPASS variables are added to enable the connection to the PostgreSQL database.
This pull request adds the necessary environment variables for configuring the database in the paperless-server.service file. The PAPERLESS_DBENGINE, PAPERLESS_DBHOST, PAPERLESS_DBNAME, PAPERLESS_DBUSER, and PAPERLESS_DBPASS variables are added to enable the connection to the PostgreSQL database.