NGINX Container Keeps Restarting, Can't Bind to Port 80

If the NGINX container keeps restarting, fails to bind to port 80, or both, try adding user: root to the docker compose file under the NGINX section:

nginx:
    user: root 
    ports:
      - "80:80"
      - "443:443"
    environment:
      - NG_SERVER_NAME=CSV4.iriusrisk.com
    image: continuumsecurity/iriusrisk-prod:nginx
    container_name: iriusrisk-nginx
    networks:
      - iriusrisk-frontend
    mem_reservation: 50M
    mem_limit: 200M
    cpu_shares: 128
    restart: unless-stopped
    volumes:
      - "./cert.pem:/etc/nginx/ssl/star_iriusrisk_com.crt:ro"
      - "./key.pem:/etc/nginx/ssl/star_iriusrisk_com.key:ro"

Also, please be sure that port 80 and 443 are either available or are being used by the docker service using the netstat command:

user@CSV4 docker]$ sudo netstat -tulpn
Active Internet connections (only servers)
Proto      Recv-Q   Send-Q     Local Address      Foreign Address State   PID/Program name
tcp             0        0     0.0.0.0:80         0.0.0.0:*       LISTEN  3885/docker-proxy
tcp             0        0     0.0.0.0:8080       0.0.0.0:*       LISTEN  3518/docker-proxy
tcp             0        0     0.0.0.0:5432       0.0.0.0:*       LISTEN  21793/postmaster
tcp             0        0     0.0.0.0:443        0.0.0.0:*       LISTEN  3863/docker-proxy