+ disable ipv6 on docker install

install-docker.sh

@@ -17,6 +17,10 @@ echo \
   \$(. /etc/os-release && echo "\$VERSION_CODENAME") stable" | \
   tee /etc/apt/sources.list.d/docker.list > /dev/null
 apt update -qq
+sysctl net.ipv6.conf.all.disable_ipv6=1
+sysctl net.ipv6.conf.default.disable_ipv6=1
+echo 'net.ipv6.conf.all.disable_ipv6=1' > /etc/sysctl.d/90-disable-ipv6.conf
+echo 'net.ipv6.conf.default.disable_ipv6=1' >> /etc/sysctl.d/90-disable-ipv6.conf
 apt-get install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin -qq
 docker run hello-world
 EOF