Unable to run shell in my container

user_2977017 0
Viewed 5377

I want to dockerize my application and I want to run and enter my container in order to see whether packages were installed properly, files were copied, etc.

Here's my Dockerfile:

FROM node:8.6
RUN mkdir /app
WORKDIR /app
COPY .*.json .
COPY src/ .
USER node
RUN yarn global add @angular/cli
EXPOSE 4200

The problem is, I can't run my container via docker run:

docker run my-notes -it --rm ash

I see errors:

container_linux.go:262: starting container process caused "exec: \"-it\": executable file not found in $PATH"
docker: Error response from daemon: oci runtime error: container_linux.go:262: starting container process caused "exec: \"-it\": executable file not found in $PATH".
ERRO[0000] error waiting for container: context canceled

What am I doing wrong?

docker-image docker-container docker
2 Answers

The issue is that you need to pass the docker options before the image name not after that:

docker run [OPTIONS] IMAGE [COMMAND] [ARG...]

I have answered this question here as well. Hope it helps.

user_72743800

The node image comes with sh, bash and dash.

If you want ash you can install the package, but it's just a symlink to /bin/dash so you can just run:

docker run -it --rm my-notes dash

To install the ash package, add the following to your Dockerfile

RUN set -uex; \
    apt-get update; \
    apt-get install ash; \
    apt-get

Then ash/dash can be run with

docker run -it --rm my-notes ash
user_13186940
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