Adding pip upgrade and missing dependencies

Signed-off-by: Vicente Zepeda Mas <vzepedam@redhat.com>

snafu/image_pull_wrapper/Dockerfile

@@ -1,9 +1,10 @@
 FROM docker://registry.access.redhat.com/ubi8:latest
 
 COPY snafu/image_resources/centos8-appstream.repo /etc/yum.repos.d/centos8-appstream.repo
-RUN dnf install -y --nodocs python3 python3-pip && dnf clean all
+RUN dnf install -y --nodocs python3 python3-pip python3-devel gcc && dnf clean all
 RUN dnf install -y --nodocs skopeo redis --enablerepo=centos8-appstream && dnf clean all
 RUN ln -s /usr/bin/python3 /usr/bin/python
 RUN mkdir -p /opt/snafu/
 COPY . /opt/snafu/
+RUN pip3 install --upgrade --no-cache-dir pip
 RUN pip3 install -e /opt/snafu/