remove unused repo from UBI base image (#7311)

Author: pdabelf5

build/dependencies/Dockerfile.ubi

@@ -4,10 +4,8 @@ FROM nginx:1.27.4@sha256:91734281c0ebfc6f1aea979cffeed5079cfe786228a71cc6f1f46a2
 FROM redhat/ubi9:9.5@sha256:be214e191bbe3f4d0f16a5a4f5642e1f32fccd6fae7d2b6c6acb066ba51fb507 AS rpm-build
 ARG NGINX
 ARG NJS
-ENV NGINX_VERSION ${NGINX}
-ENV NJS_VERSION ${NJS}
-
-
+ENV NGINX_VERSION=${NGINX}
+ENV NJS_VERSION=${NJS}
 RUN mkdir -p /nginx/; \
     # only build for ppc64le but make multiarch image for mounting
     [ $(uname -p) = x86_64 ] && exit 0; \
@@ -26,7 +24,6 @@ RUN mkdir -p /nginx/; \
     nginx-module-image-filter-${NGINX_VERSION} \
     nginx-module-njs-${NGINX_VERSION}+${NJS_VERSION} \
     " \
-    && dnf config-manager --set-enabled ubi-9-codeready-builder \
     && dnf download --source ${nginxPackages} \
     && dnf builddep -y --srpm nginx*.rpm \
     && rpmbuild --rebuild --nodebuginfo nginx*.rpm \