Fail2ban support

[raccettura]

📃 Description

I had a desire to see graphs on some servers for fail2ban by jail, so added support.

I wanted this to work without sudo, which fail2ban-client requires, so it's setup to read off the sqlite3 DB fail2ban uses.

Note: This is AI generated based on my specs, reviewed by me for general correctness, but I'm not a go developer by trade. This was to scratch a specific itch I had and creating a PR in case it's helpful for anyone else.

📖 Documentation

    beszel-agent:
      image: beszel-agent:local
      container_name: beszel-agent
      restart: unless-stopped
      ports:
        - "45876:45876"
      volumes:
        - /var/lib/fail2ban/fail2ban.sqlite3:/var/lib/fail2ban/fail2ban.sqlite3:ro
        - agent-data:/var/lib/beszel-agent
      environment:
        PORT: 45876
        KEY: 'KEY HERE'
#        FAIL2BAN_DB: /var/lib/fail2ban/fail2ban.sqlite3

📷 Screenshots