在局域网内的Docker容器中运行的服务器无响应

Question

I'm not sure if this is a networking issue, or a Docker issue, but I'm having a difficult time getting a response from a server on a separate machine in my LAN that is running a nodejs server on port 3000 in a Docker container. I'm using a Mac computer as a client, and a Linux computer as a server. These are the steps I've taken :

Testing connection to separate computer on LAN using <name of computer>.local:<port>

• Run server on Linux machine (just using nodejs without a container)
• On Mac (client) computer run curl <name of linux computer>.local:3000
• Works as expected

Testing connection to server on localhost while running inside of a Docker container

• Run server on Linux machine inside of a container using the command docker run -p 127.0.0.1:3000:3000 <name of image>
• On Linux machine run curl localhost:3000
• Works as expected

Testing connection to separate computer while running server in Docker container

• Run server on Linux machine inside of a container using the command docker run -p 127.0.0.1:3000:3000 <name of image>
• On mac machine run curl <name of linux computer>.local:3000
• No response from server

Answer 1

The container will not be accessable external to the Linux host when listening on 127.0.0.1 / localhost .

To bind to all available interfaces use:

docker run -p 3000:3000 <image>

Or specify the address of a publicly available interface from ip address show

docker run -p <public_ip>:3000:3000 <image>