Docker. How to complete the build of the image if the installation of the software goes into the background?

Question

Docker

Good day!
I'm building an image with a deployed IBM MDM system.
I install IBM Websphere without any problems I ran
into a problem in docker when installing Oracle Client Database
The problematic code snippet:

COPY linuxx64_12201_client.zip /tmp

RUN cd /tmp && \
unzip linuxx64_12201_client.zip && \

USER mdm_dev 

RUN cd /tmp/client  && \
./runInstaller -silent  -force \
 FROM_LOCATION=/tmp/client/stage/products.xml \
 INVENTORY_LOCATION=/opt/IBM/oraInventory \
 UNIX_GROUP_NAME=mdm_dev \
 ORACLE_HOME=/opt/IBM/oracle/product/12.2.0/client_1 \
 ORACLE_HOME_NAME="OraClient12c_Home1" \
 ORACLE_BASE=/opt/IBM/oracle \
 oracle.install.client.installType="Administrator"

Here the installation takes place and you need to wait for the message:

Please check '/opt/IBM/oraInventory/logs/silentInstall2019-10-11_08-16-12AM.log' for more details.
As a root user, execute the following script(s):
1. /opt/IBM/oraInventory/orainstRoot.sh
Successfully Setup Software.

From which it follows that it is necessary to execute the script from root, which I do:

USER root

RUN cp /usr/bin/awk /bin/awk && \
/opt/IBM/oraInventory/orainstRoot.sh

But the following happens: at some point, the installation goes into the background, and when you press Enter, the console becomes available for typing the next command.
As a result, the build script goes further and the /opt/IBM/oraInventory/orainstRoot.sh script is executed, when the installation has not even started yet.
A wait command comes to mind for the time being to allow the installation to complete. But this option seems to me a crutch. Since there is no way to control the installation to the end. Or it will be too long.
Perhaps there is some other solution?

Answer 1

I would search the docs and forums for how to run orainstRoot.sh in non-interactive mode.