Docker. Exec npm command in different folder - docker

Question

I want to run npm install command in container.
But simple: docker exec container npm install is not the right thing for me.
I want to run this command in /home/client but my working directory in container is /home
Is that possible?
I don't want to enter container and I don't want to change working environment.
Edit 1
Dockerfile:
FROM ubuntu:16.04
COPY . /home
WORKDIR /home
RUN apt-get update && apt-get install -y \
python-pip \
postgresql \
rabbitmq-server \
libpq-dev \
python-dev \
npm \
mongodb
RUN pip install -r requirements.txt
Docker run command:
docker run \
-tid \
-p 8000:8000 \
-v $(PWD):/home \
--name container \
-e DB_NAME \
-e DB_USER \
-e DB_USER_PASSWORD \
-e DB_HOST \
-e DB_PORT \
container
Two commands in order to prove there is a directory /home/client:
docker exec container pwd
Gives: /home
docker exec container ls client
Gives:
node_modules
package.json
src
webpack.config.js
That's node modules from my host.
Edit 2
When run:
docker exec container cd /home/client
It produces the following error:
rpc error: code = 2 desc = oci runtime error: exec failed: container_linux.go:247: starting container process caused "exec: \"cd\": executable file not found in $PATH"

Answer 1

That is possible with:
docker exec {container} sh -c "cd /home/client && npm install"
Thanks to Matt

Answer 2

Yeah, it's possible. You can do it one of two ways.
Method 1
Do it in a single command like this:
$ docker exec container sh -c "cd /home/client && npm install"
Or like this (as an arg to npm install):
$ docker exec container npm install --prefix /home/client
Method 2
Use an interactive terminal:
$ docker exec -it container /bin/bash
# cd /home/client
# npm install