RHAIENG-1069: Build the RStudio RPM from source instead of using their prebuilt package.

During an early build step called rpm-builder, the source code is downloaded and all build instructions provided by RStudio are followed to produce an .rpm file. Later, the RStudio RPM is copied and installed into the AIPCC image.

Author: ysok

.tekton/odh-workbench-rstudio-minimal-cpu-py312-rhel9-pull-request.yaml

@@ -39,7 +39,7 @@ spec:
     value:
     - linux/x86_64
   - name: dockerfile
-    value: rstudio/rhel9-python-3.12/Dockerfile.cpu
+    value: rstudio/rhel9-python-3.12/Dockerfile.konflux.cpu
   - name: path-context
     value: .
   - name: build-args-file

.tekton/odh-workbench-rstudio-minimal-cpu-py312-rhel9-push.yaml

@@ -29,7 +29,7 @@ spec:
   - name: output-image
     value: quay.io/opendatahub/odh-workbench-rstudio-minimal-cpu-py312-rhel9:{{revision}}
   - name: dockerfile
-    value: rstudio/rhel9-python-3.12/Dockerfile.cpu
+    value: rstudio/rhel9-python-3.12/Dockerfile.konflux.cpu
   - name: build-args-file
     value: rstudio/rhel9-python-3.12/build-args/cpu.conf
   - name: path-context