How to provide self-hosted admin URL

What I’ve made:

git clone https://github.com/plasmicapp/plasmic.git
cd plasmic
docker compose up -d

After all created:

docker ps -a
CONTAINER ID   IMAGE                 COMMAND                  CREATED          STATUS                      PORTS                                         NAMES
f2a1ef792cc5   plasmic-plasmic-wab   "sh -c 'jq '(.host =…"   14 minutes ago   Exited (1) 12 minutes ago                                                 plasmic-plasmic-wab-1
93a2a35e18d6   postgres:15           "docker-entrypoint.s…"   14 minutes ago   Up 12 minutes (healthy)     0.0.0.0:5432->5432/tcp, [::]:5432->5432/tcp   plasmic-plasmic-db-1

Permission for creating tmp.json is denied:

plasmic:~/plasmic$ docker logs plasmic-plasmic-wab-1
sh: can't create tmp.json: Permission denied

The part of docker-compose.yml where tmp.json is trying to create:

# Plasmic WAB (Web App Builder)
  plasmic-wab:
    build:
      context: .
      dockerfile: ./platform/wab/tools/docker-dev/Dockerfile.dev.aio
    command: # Override the default dockerfile startup command here for debugging purpose
    - |
      jq '(.host = "plasmic-db") | (.password //= "SEKRET")' ormconfig.json > tmp.json && mv tmp.json ormconfig.json && \
      yarn typeorm migration:run && \
      yarn seed && \
      cd /plasmic && \
      yarn dev