🐳Docker is different on Mac and Linux systems. Docker directly leverages the kernel of the host system on Linux. On the other hand, Mac does not provide a Linux kernel, so Docker runs on a small Linux VM running on a mac. Due to this, there are many differences.
On Linux let's try to inspect a running docker image :
ubuntu@primary:~$ sudo docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES a230855dd7d2 httpd "httpd-foreground" 17 seconds ago Up 16 seconds 80/tcp determined_saha ubuntu@primary:~$ sudo docker inspect determined_saha
Let's curl the IP :
"IPAddress": "172.17.0.2", "IPPrefixLen": 16, "IPv6Gateway": "", "GlobalIPv6Address": "", "GlobalIPv6PrefixLen": 0, "MacAddress": "02:42:ac:11:00:02", "DriverOpts": null } } } } ] ubuntu@primary:~$ curl 172.17.0.2 <html><body><h1>It works!</h1></body></html>
However on mac when hitting the IP address of the container we get :
➜ curl 172.17.0.3 curl: (7) Failed to connect to 172.17.0.3 port 80: Operation timed out
Curl times out because the container is running inside the VM and not sharing the network with the mac.