Cannot reach services exposed by docker containers on Ubuntu 18.04 - linux

Question

I've been struggling with a strange problem on Ubuntu 18.04. I cannot reach services exposed by containers. I will show you on an example with nginx.
Starting the container:
sudo docker run -it --rm -d -p 8080:80 --name web nginx
docker ps shows:
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
f09c71db299a nginx "/docker-entrypoint.…" 10 minutes ago Up 10 minutes 0.0.0.0:8080->80/tcp web
listening is on 0.0.0.0:8080 as expected
But curl throws "Connection reset by peer":
$ curl -4 -i -v localhost:8080
* Rebuilt URL to: localhost:8080/
* Trying 127.0.0.1...
* TCP_NODELAY set
* Connected to localhost (127.0.0.1) port 8080 (#0)
> GET / HTTP/1.1
> Host: localhost:8080
> User-Agent: curl/7.58.0
> Accept: */*
>
* Recv failure: Connection reset by peer
* stopped the pause stream!
* Closing connection 0
curl: (56) Recv failure: Connection reset by peer
I used tshark to inspect a network traffic:
$ sudo tshark -i any
66 7.442606878 127.0.0.1 → 127.0.0.1 TCP 68 8080 → 47430 [ACK] Seq=1 Ack=79 Win=65408 Len=0 TSval=4125875840 TSecr=4125875840
67 7.442679088 172.16.100.2 → 172.16.100.1 TCP 56 80 → 37906 [RST, ACK] Seq=1 Ack=1 Win=0 Len=0
68 7.442784223 127.0.0.1 → 127.0.0.1 TCP 68 8080 → 47430 [RST, ACK] Seq=1 Ack=79 Win=65536 Len=0 TSval=4125875840 TSecr=4125875840
I see RST within the container(?). I have never had such an issue and I'm a bit lost how to solve it. Can someone help me out?
UPDATE: I used docker inspect f09c71db299a and it shows that:
"Gateway": "172.16.100.1"
"IPAddress": "172.16.100.2"
172.16.100.1 it's my docker0 IP address. It looks it rejects traffic from the container, right?
UPDATE 2: According to NightsWatch's suggestion I checked if the host accepts connection on the 8080. Telnet says:
~$ telnet localhost 8080
Trying ::1...
Connected to localhost.
Escape character is '^]'.
So it looks port is open but the request is blocked :/