pg_restore dbname is missing in command call

When applying the `pg_restore` command, I kept getting an issue stating that the database name was not set. It seems that the following command was not doing anything:

`export PGDATABASE=$TARGET_DATABASE_NAME`

I updated the `pg_restore` call to the following which ended up fixing the issue:

`pg_restore -v --no-owner --host="$TARGET_SERVER_NAME.postgres.database.azure.com" --port=5432 --username="$TARGET_USERNAME@$TARGET_SERVER_NAME" --dbname=$TARGET_DATABASE_NAME "$SOURCE_DATABASE_NAME.dump"`

Is there any reason as to why this issue would come up?