Please note that security bugs or issues should be reported to security@pgadmin.org.

Describe the bug

I have an error when starting pgadmin container (dpage/pgadmin:9.15.0).

`
Traceback (most recent call last):
File "", line 1, in
from check_external_config_db import check_external_config_db; val = check_external_config_db("'postgresql+psycopg://user:pass@localhost:5432/pgadmin'"); print(val)

File "/pgadmin4/pgadmin/utils/check_external_config_db.py", line 18, in check_external_config_db
engine = create_engine(database_uri)
File "", line 2, in create_engine
File "/venv/lib/python3.14/site-packages/sqlalchemy/util/deprecations.py", line 281, in warned
return fn(*args, **kwargs) # type: ignore[no-any-return]
File "/venv/lib/python3.14/site-packages/sqlalchemy/engine/create.py", line 564, in create_engine
u = _url.make_url(url)
File "/venv/lib/python3.14/site-packages/sqlalchemy/engine/url.py", line 856, in make_url
return _parse_url(name_or_url)
File "/venv/lib/python3.14/site-packages/sqlalchemy/engine/url.py", line 922, in _parse_url
raise exc.ArgumentError(
"Could not parse SQLAlchemy URL from given URL string"
)
sqlalchemy.exc.ArgumentError: Could not parse SQLAlchemy URL from given URL string
`

The check for PGADMIN_CONFIG_CONFIG_DATABASE_URI in entrypoint.sh is incorrect.
The line 153 put double quotes around environment variable but the var should be specified with single quotes for correct generation of config_distro.py.

external_config_db_exists=$(cd /pgadmin4/pgadmin/utils && $SU_EXEC /venv/bin/python3 -c "from check_external_config_db import check_external_config_db; val = check_external_config_db(\"${PGADMIN_CONFIG_CONFIG_DATABASE_URI}\"); print(val)")

The error doesn't prevent the start of pgadmin.

To Reproduce

Steps to reproduce the behavior:

1. configure PGADMIN_CONFIG_CONFIG_DATABASE_URI
2. start container
3. check container log

Expected behavior

No error reported