Perl-5.26 for RHEL7 reached EOL in May 2021

Signed-off-by: Petr "Stone" Hracek <[email protected]>

Author: phracek

Diff for: 5.26/.exclude-rhel7

@@ -29,7 +29,7 @@ the nodejs itself is included just to make the npm work.
 Usage in Openshift
 ------------------
 
-In this example, we will assume that you are using the `rhscl/perl-526-rhel7` image, available via `perl:5.26` imagestream tag in Openshift.
+In this example, we will assume that you are using the `ubi8/perl-526` image, available via `perl:5.26` imagestream tag in Openshift.
 To build a simple [perl-sample-app](https://github.com/sclorg/dancer-ex.git) application in Openshift:
 
 ```
@@ -70,10 +70,10 @@ To use the Perl image in a Dockerfile, follow these steps:
 #### 1. Pull a base builder image to build on
 
 ```
-podman pull rhscl/perl-526-rhel7
+podman pull ubi8/perl-526
 ```
 
-An RHEL7 image `rhscl/perl-526-rhel7` is used in this example.
+An RHEL8 image `ubi8/perl-526` is used in this example.
 
 #### 2. Pull and application code
 
@@ -96,7 +96,7 @@ For all these three parts, users can either setup all manually and use commands
 ##### 3.1 To use your own setup, create a Dockerfile with this content:
 
 ```
-FROM rhscl/perl-526-rhel7
+FROM ubi8/perl-526
 
 # Add application sources
 ADD app-src .
@@ -119,7 +119,7 @@ CMD exec httpd -C 'Include /opt/app-root/etc/httpd.conf' -D FOREGROUND
 ##### 3.2 To use the Source-to-Image scripts and build an image using a Dockerfile, create a Dockerfile with this content:
 
 ```
-FROM rhscl/perl-526-rhel7
+FROM ubi8/perl-526
 
 # Add application sources to a directory that the assemble scriptexpects them
 # and set permissions so that the container runs without root access