I cant establish a connection from Azure pipelines to oracle using cx_oracle

Libraries
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I am trying to establish a connection from Azure pipelines to oracle using cx_oracle. I’m using a dockerfile:

FROM python:3.9-slim-buster

RUN apt-get update && apt-get install -y git && apt-get install telnet RUN apt-get install -y gcc RUN apt-get -y install wget RUN apt -y install unzip RUN wget https://download.oracle.com/otn_software/linux/instantclient/215000/instantclient-basic-linux.x64-21.5.0.0.0dbru.zip RUN unzip instantclient-basic-linux.x64-21.5.0.0.0dbru.zip RUN apt-get -y install libaio1 RUN sh -c “echo /instantclient_21_5 > /etc/ld.so.conf.d/oracle-instantclient.conf” RUN ldconfig RUN apt -y remove unzip RUN rm instantclient-basic-linux.x64-21.5.0.0.0dbru.zip

CMD [“/bin/sh”]enter image description here

Im doing automated tests using robotframework, i just updated to cx-Oracle 8.3.0. I still get the error “DatabaseError: DPI-1047: Cannot locate a 64-bit Oracle Client library: “libclntsh.so: cannot open shared object file: No such file or directory”.”

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If I use this new python-oracledb module Will I have to modify my keywords?
Currently I do it this way:

connect to database using custom params cx_Oracle ${DB_CONNECT_STRING}