Dockerfile: Blow out quay.io cache for package updates

Let's get the latest rpm-ostree in.

Author: cgwalters

Dockerfile

@@ -7,7 +7,7 @@ WORKDIR /root/containerbuild
 # Only need a few of our scripts for the first few steps
 COPY ./src/print-dependencies.sh ./src/deps*.txt ./src/vmdeps*.txt ./src/build-deps.txt /root/containerbuild/src/
 COPY ./build.sh /root/containerbuild/
-RUN ./build.sh configure_yum_repos # nocache 20201026
+RUN ./build.sh configure_yum_repos # nocache 20201116
 RUN ./build.sh install_rpms
 
 # Ok copy in the rest of them for the next few steps