Permission Denied mapping Expo volumes in Docker

Question

I am receiving a permission error when attempting to map volumes over. I don't understand because I should be root by default as far as I know. I tried chmodding the files 777 on my host but no effect.

client_1   | 
client_1   | > web
client_1   | > expo start --web
client_1   | 
client_1   | Uncaught Error Error: EACCES: permission denied, mkdir '/root/.expo'
arglasses_client_1 exited with code 1

# pull base image
FROM node:14

# set our node environment, either development or production
ARG NODE_ENV=development
ENV NODE_ENV $NODE_ENV

# default to port 19006 for node, and 19001 and 19002 (tests) for debug
ARG PORT=19006
ENV PORT $PORT
EXPOSE $PORT 19001 19002

# install global packages
ENV NPM_CONFIG_PREFIX=/home/node/.npm-global
ENV PATH /home/node/.npm-global/bin:$PATH
RUN npm i --unsafe-perm -g npm@latest expo-cli@latest

# install dependencies first, in a different location for easier app bind mounting for local development
RUN mkdir /opt/client
WORKDIR /opt/client
ENV PATH /opt/client/.bin:$PATH

# copy in our source code last, as it changes the most
WORKDIR /opt/client/app
# for development, we bind mount volumes; comment out for production
COPY . .
RUN npm install

ENTRYPOINT ["npm", "run"]
CMD ["web"]

services: 
  client:
    build: client
    environment:
      - NODE_ENV=development
    tty: true
    ports:
      - '19006:19006'
      - '19001:19001'
      - '19002:19002'
    depends_on:
      - server
    volumes: 
      - ./client:/opt/client/app
      - /opt/client/app/node_modules