Add CentOS 10 to test suite

Signed-off-by: Christian König <github@yubiuser.dev>

test/_centos_10.Dockerfile

@@ -0,0 +1,20 @@
+FROM quay.io/centos/centos:stream10
+# Disable SELinux
+RUN echo "SELINUX=disabled" > /etc/selinux/config
+RUN yum install -y --allowerasing curl git initscripts
+
+ENV GITDIR=/etc/.pihole
+ENV SCRIPTDIR=/opt/pihole
+
+RUN mkdir -p $GITDIR $SCRIPTDIR /etc/pihole
+ADD . $GITDIR
+RUN cp $GITDIR/advanced/Scripts/*.sh $GITDIR/gravity.sh $GITDIR/pihole $GITDIR/automated\ install/*.sh $GITDIR/advanced/Scripts/COL_TABLE $SCRIPTDIR/
+ENV PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:$SCRIPTDIR
+
+RUN true && \
+    chmod +x $SCRIPTDIR/*
+
+ENV SKIP_INSTALL=true
+ENV OS_CHECK_DOMAIN_NAME=dev-supportedos.pi-hole.net
+
+#sed '/# Start the installer/Q' /opt/pihole/basic-install.sh > /opt/pihole/stub_basic-install.sh && \