IBM DB2 connection from docker through python throwing [IBM][CLI Driver] SQL1598N – Debian

I have tried multiple docker images including centos7, centos8, debian, python, ubuntu.
But every where its a dead end.
I am able to connect from node js from same docker build.
Even using python it is successfully connecting to db2 from windows but when I use python in docker it fails with License error

File "/usr/local/lib/python3.8/site-packages/sqlalchemy/pool/base.py", line 656, in __connect
    connection = pool._invoke_creator(self)
  File "/usr/local/lib/python3.8/site-packages/sqlalchemy/engine/strategies.py", line 114, in connect
    return dialect.connect(*cargs, **cparams)
  File "/usr/local/lib/python3.8/site-packages/sqlalchemy/engine/default.py", line 493, in connect
    return self.dbapi.connect(*cargs, **cparams)
  File "/home/service/ibm_db_dbi.py", line 1188, in connect
    raise _get_exception(inst)
sqlalchemy.exc.ProgrammingError: (ibm_db_dbi.ProgrammingError) ibm_db_dbi::ProgrammingError: Exception('[IBM][CLI Driver] SQL1598N  An attempt to connect to the database server failed because of a licensing problem.  SQLSTATE=42968 SQLCODE=-1598')

DockerFile

FROM python

USER root
WORKDIR /home/service
ADD ./ /home/service

RUN python --version
RUN pip install -r requirements.txt
RUN cp db2consv_ee.lic /usr/local/lib/python3.8/site-packages/clidriver/license/

requirements.txt

ibm_db==3.0.2
ibm-db-sa==0.3.5
SQLAlchemy==1.3.18

Python script

from sqlalchemy import Column, Integer, String, MetaData
from sqlalchemy import create_engine
engine = create_engine("db2+ibm_db://userId:password@host:port/db") #create a database engine
from sqlalchemy.ext.declarative import declarative_base
metadata = MetaData(schema='schemaName')
Base = declarative_base(bind=engine, metadata=metadata)

class Customers(Base):
   __tablename__ = 'tableName'
   CLIENT_ID = Column(Integer, primary_key=True)
   CLIENT_NAME = Column(Integer)
   CREATED_BY = Column(String)

from sqlalchemy.orm import sessionmaker
Session = sessionmaker(bind = engine)
session = Session()
result = session.query(Customers).limit(2)

for row in result:
   print (row.CLIENT_NAME )