CODEWITHSUNDEEP
node.jsbashdockernpm
Peter
Peter

Reputation: 4701

Npm not found when running docker container from node image

# Dockerfile
FROM node:7-alpine
RUN mkdir -p /src/app
WORKDIR /src/app
COPY package.json /src/app/package.json
RUN npm install
COPY . /src/app
EXPOSE 3000
CMD ['npm', 'start']

I'm trying to complete a katacoda.com exercise for Dockerizing nodejs applications with the Dockerfile above. The build completes but running the image quits immediately and in the docker logs I see:

/bin/sh: [npm,: not found

I tried running the container in interactive mode with docker -it nodeapp /bin/bash which raised the error docker: Error response from daemon: oci runtime error: container_linux.go:262: starting container process caused "exec: \"/bin/bash\": stat /bin/bash: no such file or directory". So I'm not sure what is going on here.

Upvotes: 14

Views: 13425

Answers (3)

pappu_kutty
pappu_kutty

Reputation: 2488

i changed CMD ["npm", "start"] to CMD npm start, with no " or ' special characters. it works now

Upvotes: 1

downer
downer

Reputation: 964

I had the same symptom but the problem was slightly different. Writing here in case google leads others in my situation to this link For me the issue was forgetting commas in the CMD. So the solution was going from CMD ["npm" "start"] to CMD ["npm", "start"].

Upvotes: 6

Tarun Lalwani
Tarun Lalwani

Reputation: 146530

The reason it doesn't work is single quotes

CMD ['npm', 'start']

should be

CMD ["npm", "start"]

When you don't use double quotes, docker will remove the single quotes and process the command as [npm, start]

That is why you see error [npm, : not found

Upvotes: 37

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