ERROR WCSite image build with WebLogic Image Tool version 1.11.5

[antoninoromeo]

from build log:
Step 1/43 : FROM ghcr.io/oracle/oraclelinux:8-slim as os_update
8-slim: Pulling from oracle/oraclelinux
051f419db9dd: Pulling fs layer
051f419db9dd: Download complete
051f419db9dd: Pull complete
Digest: sha256:128890f01d9df4a209ff8ebcd3615d76d6219e904d82c95b419dde68c9b44bd0
Status: Downloaded newer image for ghcr.io/oracle/oraclelinux:8-slim

Step 35/43 : RUN yum install -y hostname && rm -rf /var/cache/yum
---> Running in f9b22ad987f5
/bin/sh: yum: command not found
Removing intermediate container f9b22ad987f5
[SEVERE ] Build command failed with error: The command '/bin/sh -c yum install -y hostname && rm -rf /var/cache/yum' returned a non-zero code: 127

Error is clear:
docker run -it ghcr.io/oracle/oraclelinux:8-slim bash
bash-4.4# yum
bash: yum: command not found
The used oracle 8 image does't own yum command while oracle linux 7 has!!!!
Can i modify generated docker file????

[brahankv]

Can you please share the arguments used with WebLogic Image Tool?
Please try with the additional argument --fromImage ghcr.io/oracle/oraclelinux:7-slim as WCSites is not supported yet in Oracle Linux 8.
If you are using buildargs file with WebLogic Image Tool then add --fromImage ghcr.io/oracle/oraclelinux:7-slim in the file.