I have a script that encrypts the files that are created by my application. The script is a bat file, I am changing it to shell script because in openshift we use wildfly server in centOS and the script uses OpenSSL.
My question is
I am new to openshift and all. So not aware of this.
The short answer is "Yes" - practically, you can add to a container image any tool that you need. It is usually regarded as a good practice to add only what you need to keep the image size small.
It is quite possible that there's an image already "out there" that has openssl installed on centos. You may have to build the image for reasons like security, company policies, etc.
First, create a new image from a base image. A sample Dockerfile:
FROM centos:centos7
# Switch to root to be able to install stuff
USER 0
# -y for unattended install
RUN yum install -y curl \
# clean up the yum cache
&& yum clean all
Build the image, then push it to a Docker registry. Next, reference the image in the deployment configuration as the image for a container.
With OpenShift you actually have the option of building images on OpenShift, including using Docker builds, and saving them automatically in OpenShift's integrated Docker registry.