Docker compose error while creating mount source path - docker

Question

I have created a docker-compose.yml using cloudestuary. After downloading it and putting it in my Laravel project folder and running docker-compose up -d the download takes place and then I get this message:
ERROR: for worker-1 Cannot start service worker-1: error while creating mount source path '/var/www/html/lensin/html': mkdir /var/www: read-only file system
ERROR: for nginx Cannot start service nginx: error while creating mount source path '/var/www/html/lensin/html': mkdir /var/www: read-only file system
ERROR: for app Cannot start service app: error while creating mount source path '/var/www/html/lensin/html': mkdir /var/www: read-only file system
ERROR: for workspace Cannot start service workspace: error while creating mount source path '/var/www/html/lensin/html': mkdir /var/www: read-only file system
ERROR: Encountered errors while bringing up the project.
I`m on Ubuntu 17, and have tried even to set 777 to all folders, and running it with sudo, but the result is the same. I have also tried to move the file and to edit the volumes in yml.
Here is my docker compose file:
version: '2'
services:
nginx:
image: 'cloudestuary/nginx:mainline-fpm'
restart: always
environment:
CLIENT_MAX_BODY_SIZE: 100m
DOCUMENT_ROOT: /var/www/html/public
INDEX_FILE: index.php
PHP_FPM: app
networks:
- app
volumes:
- './html:/var/www/html'
ports:
- '80:80'
app:
image: 'cloudestuary/php-fpm:7.1'
restart: always
environment:
MAX_UPLOAD_FILE_SIZE: 100m
APP_URL: 'http://lensin.localhost'
APP_KEY: 'base64:2X9U1HiBdmfbwvZ4UkwUP/25svg7439HXKWL1F8Xn1c='
DB_CONNECTION: mysql
DB_HOST: mysql
DB_PORT: '3306'
DB_DATABASE: cloudestuary
DB_USER: cloudestuary
DB_PASSWORD: secret
networks:
- app
volumes:
- './html:/var/www/html'
workspace:
image: 'cloudestuary/php-workspace:7.1'
restart: always
ports:
- '2222:22'
environment:
MAX_UPLOAD_FILE_SIZE: 100m
APP_URL: 'http://lensin.localhost'
APP_KEY: 'base64:2X9U1HiBdmfbwvZ4UkwUP/25svg7439HXKWL1F8Xn1c='
DB_CONNECTION: mysql
DB_HOST: mysql
DB_PORT: '3306'
DB_DATABASE: cloudestuary
DB_USER: cloudestuary
DB_PASSWORD: secret
SSH_PASSWORD: xsKEVWXPrdAeg
networks:
- app
volumes:
- './html:/var/www/html'
worker-1:
image: 'cloudestuary/php-cli:7.1'
restart: always
networks:
- app
environment: { }
volumes:
- './html:/var/www/html'
command: 'php artisan queue:work'
mysql:
image: 'mysql:5.7'
restart: always
networks:
- app
environment:
MYSQL_ROOT_PASSWORD: toor
MYSQL_PASSWORD: secret
MYSQL_USER: cloudestuary
MYSQL_DATABASE: cloudestuary
volumes:
- 'mysql-data:/var/lib/mysql'
volumes:
mysql-data: { }
networks:
app: { }

Answer 1

It's likely a pathing issue with Docker when installed with snap, you're better off installing it with the official documentation from Docker.
Remove docker from snap
snap remove docker
Remove the docker directory, and old version (It's okay if these don't exist already)
rm -R /var/lib/docker
sudo apt-get remove docker docker-engine docker.io
Install the official docker package: https://docs.docker.com/install/linux/docker-ce/ubuntu/
Update: Since posting this answer, I've learnt that tools installed using snap are installed in a sandbox with limited permissions outside of that sandbox. This is likely the cause as docker won't have access to the external filesystem from its isolated sandbox environment.

Answer 2

Restart your docker service. Then the problem will solve.
sudo systemctl restart docker

Answer 3

What led me here was the Kubernetes V1VolumeMount. When deploying my application I was getting the same error format:
ERROR: for <pod_name> Cannot start <service_name>: error while creating mount source path '<source_path>': mkdir <dir_path>: read-only file system
At the start I was thinking permissions error as well, hence the message is a bit misleading. I turned out that I was trying to mount something that didn't exist in the source image. Hence, my uneducated suggestion would be, verify that what you are trying to mount does exist, if it doesn't you probably don't need that mount path.
P.S. I saw that there wasn't an accepted answer, so I am hoping that my contribution is not causing unnecessary cluttering.

Answer 4

Got this error but the issue was that the source path was a symlink. For some reason docker does not seem to like it, even after restarting the service.
Had to use a real path and then it worked just fine with Docker version 20.10.8 installed with snap.

Answer 5

For Docker on Windows 10, sometimes you have just to wait a while (1-5 min) before executing docker-compose up again.
Hope this will help someone else.