Docker in Claude Code for Web

Claude Code for Web runs in a restricted container environment that requires special configuration for Docker.

Detection

You're in Claude Code for Web if:

# Proxy environment is set
echo $http_proxy  # Shows a proxy URL

# Running inside a container
test -f /.dockerenv && echo "In container"

# iptables is restricted
iptables -L 2>&1 | grep -q "Permission denied"