Docker on Debian Failing to Bind to Port 80

I am running Docker on Debian 11. I deploy an Nginx container and it fails to bind to port 80 even though port 80 is not in use by any other process. I even tried running Docker as root. Here's the command: docker run -d -p 80:80 nginx:alpine Here's the container logs:

/docker-entrypoint.sh: /docker-entrypoint.d/ is not empty, will attempt to perform configuration
/docker-entrypoint.sh: Looking for shell scripts in /docker-entrypoint.d/
/docker-entrypoint.sh: Launching /docker-entrypoint.d/10-listen-on-ipv6-by-default.sh
10-listen-on-ipv6-by-default.sh: info: Getting the checksum of /etc/nginx/conf.d/default.conf
10-listen-on-ipv6-by-default.sh: info: Enabled listen on IPv6 in /etc/nginx/conf.d/default.conf
/docker-entrypoint.sh: Launching /docker-entrypoint.d/20-envsubst-on-templates.sh
/docker-entrypoint.sh: Launching /docker-entrypoint.d/30-tune-worker-processes.sh
/docker-entrypoint.sh: Configuration complete; ready for start up
2022/08/03 11:06:15 [emerg] 1#1: socket() 0.0.0.0:80 failed (13: Permission denied)
nginx: [emerg] socket() 0.0.0.0:80 failed (13: Permission denied)

I suspect that **Apparmor is blocking the network access**. When I uninstall Apparmor everything works well. However, with Apparmor installed, only **privileged** Docker containers are able to connect to the internet. Please let me know if you need any other information to help me debug this problem.