docker: Command "/bin/sh" not found

Question

ENV PORT=3000
ENV NODE_ENV=production
EXPOSE $PORT

WORKDIR $APP_DIR
COPY yarn.lock package.json $APP_DIR/
RUN ["/usr/local/bin/yarn"]

COPY . $APP_DIR
ENTRYPOINT ["/usr/local/bin/yarn", "run"]
CMD ['dev']

Was running this using this command

docker run --rm -p 3000:3000 my-app:latest

And the console outputs yarn run v0.17.9 error Command "/bin/sh" not found. info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

I expect /usr/local/bin/yarn run dev to be executed inside docker, am I missing something?

Answer 1

Try switching to double quotes, single quotes aren't valid for a json string:

CMD ["dev"]