La actualización de PostgreSQL 13 desde PostgreSQL 10 falla

Vi que es necesario detener el contenedor de datos antes:

Esto es lo que obtengo al ejecutar tail -f shared/data/log/var-log/postgres/current después de detener los 2 contenedores:

2021-06-06 16:38:37.411 UTC [113] HINT:  The server must be started by the user that owns the data directory.
2021-06-06 16:38:38.424 GMT [114] LOG:  skipping missing configuration file "/shared/postgres_data/postgresql.auto.conf"
2021-06-06 16:38:38.424 UTC [114] FATAL:  data directory "/shared/postgres_data" has wrong ownership
2021-06-06 16:38:38.424 UTC [114] HINT:  The server must be started by the user that owns the data directory.
2021-06-06 16:38:39.439 GMT [115] LOG:  skipping missing configuration file "/shared/postgres_data/postgresql.auto.conf"
2021-06-06 16:38:39.439 UTC [115] FATAL:  data directory "/shared/postgres_data" has wrong ownership
2021-06-06 16:38:39.439 UTC [115] HINT:  The server must be started by the user that owns the data directory.
2021-06-06 16:38:40.461 GMT [116] LOG:  skipping missing configuration file "/shared/postgres_data/postgresql.auto.conf"
2021-06-06 16:38:40.461 UTC [116] FATAL:  data directory "/shared/postgres_data" has wrong ownership
2021-06-06 16:38:40.461 UTC [116] HINT:  The server must be started by the user that owns the data directory.

Probablemente esa sea la fuente del problema, ¿cómo puedo solucionarlo?

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