CODEWITHSUNDEEP
node.jsdockerdockerfile
user5351386
user5351386

Reputation:

Docker with nodejs doesn't start container

This is my Dockerfile, very simple

FROM node:8.12.0-alpine EXPOSE 3000 CMD [ "node" ]

I run 

docker build -t node_alpine .

and

docker run -p 80:3000 node_alpine

but the container doesn't start. when I run

docker ps

I can't see anythings. Why?

Upvotes: 0

Views: 1546

Answers (1)

David Maze
David Maze

Reputation: 158657

If you just run node with no arguments, it will read a program from its standard input, and if there is nothing there, it will promptly exit. If you run docker ps -a you should see the exited container.

I'd recommend setting up an ordinary Javascript development environment on your host. Once you have your application working, write a Dockerfile that COPY your (built) application into an image, and then use a CMD to run that.

The Dockerfile you've shown doesn't really do anything. If you do provide Node with a standard input you'll probably get the interactive prompt

docker run --rm -it node:8.12.0-alpine node

but that's a pretty roundabout way to get a language interpreter REPL; just install Node directly on your host and use that for development.

Upvotes: 1

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