Remove rpm operator-courier dependency and install it from pypi instead

Dockerfile

@@ -19,16 +19,11 @@ RUN dnf -y install \
     python3-jsonschema \
     python3-koji \
     python3-requests \
-    python3-operator-courier \
     python3-ruamel-yaml \
     python3-pip \
     && dnf -y clean all \
     && rm -rf /tmp/*
 
-RUN dnf --enablerepo=updates-testing -y update python3-operator-courier \
-    && dnf -y clean all \
-    && rm -rf /tmp/*
-
 RUN if [ "$cacert_url" != "undefined" ]; then \
         cd /etc/pki/ca-trust/source/anchors \
         && curl -O $cacert_url \
@@ -37,6 +32,7 @@ RUN if [ "$cacert_url" != "undefined" ]; then \
 # This will allow a non-root user to install a custom root CA at run-time
 RUN chmod 777 /etc/pki/tls/certs/ca-bundle.crt
 COPY . .
+RUN pip3 install -r requirements-operator-courier.txt
 RUN pip3 install . --no-deps
 USER 1001
 EXPOSE 8080

requirements-operator-courier.txt

@@ -0,0 +1,4 @@
+operator-courier == 2.1.8 --hash=sha256:b5482baeff662c1bcba5ec0a97e2f21132ee7a155580ab0ac3b886e1affd8396
+PyYAML == 5.3.1 --hash=sha256:b8eac752c5e14d3eca0e6dd9199cd627518cb5ec06add0de9d32baeee6fe645d
+validators == 0.17.1 --hash=sha256:898b6b8197fbc320daf25d3b32fa928fd25e225c33790cb58ed54b48aebe1858
+semver==2.10.2  --hash=sha256:21e80ca738975ed513cba859db0a0d2faca2380aef1962f48272ebf9a8a44bd4