pgadmin4, reverse proxy and apache

Good evening,

I am trying to run pgadmin4 with docker and reverse proxy with apache.
The page gives info for ngninx. I have tried this with apache:

<Location /pgadmin4>
        RedirectMatch permanent ^/pgadmin4$ /pgadmin4/
        ProxyPreserveHost On
        ProxyPass  http://127.0.0.1:5050/
        ProxyPassReverse http://127.0.0.1:5050/
        Header edit Location ^/ /pgadmin4/
        Header always set X-Script-Name /pgadmin4
</Location>

However, it doesn't work. The url is always truncated from
https://foo.com/pgadmin4/login?next=%2Fpgadmin4%2F to
https://foo.com/login?next=%2Fpgadmin4%2F

Does anybody know ho to solve this ?

Thanks in advance for your help,

François Valenduc