How does the host host access the docker service in the virtual machine?

System environment:

Host system: windows 8

Virtual machine software: Oracle VirtualBox (CentOS7)

docker version : 19.03.7

Problem description

1. Systemctl start docker inside the virtual machine starts docker

2. docker run -d -p 80:80 nginx starts nginx service

3. Virtual machine ip 192.168.56.200, docker service ip 172.17.0.16

4. Host browser localhost:81 cannot access nginx

The solution is as follows:

1. Open virtualbox

2. Select the virtual machine where the docker service is located

3. Click Settings-> Network

4. Select the NAT network card

5. Click Advanced-> Port Forwarding

6. Add rules: tcp protocol, host and subsystem port settings, such as host:80 guest:80

7. Visit localhost:80 with the browser and you can view the nginx interface

##Recommended tutorial:

docker Tutorial

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