Alpine ping: operation not permitted
Solution 1:
This is a sysctl setting that restricts the user ID range allowed to ping on Alpine. To let all users ping,
echo "0 2147483647" > /proc/sys/net/ipv4/ping_group_range
and to make it permanent,
echo "net.ipv4.ping_group_range = 0 2147483647" >> /etc/sysctl.conf