Docker compose not working,trying to setup nextcloud

Hello, I’m new to docker and find it quite hard to learn…I am currently trying to setup nextcloud with mysql but am also adding nginx-reverse proxy and letsencrypt because I am not sure how to modify the .yml file.The guide I’m following: https://blog.ssdnodes.com/blog/installing-nextcloud-docker/
The error:
nextcloud-proxy is up-to-date
Starting nextcloud-mariadb …
Starting nextcloud-mariadb … error
ERROR: for nextcloud-mariadb Cannot start service db: OCI runtime create failed: container_linux.go:346: starting container process caused “process_linux.go:449: container init caused “rootfs_linux.go:58: mounting \”/etc/localtime\” to rootfs \"/var/lib/docker/overlay2/aa349bb52d1e7896f368c876b0715fd737263e33fdf90500dee7adc1c28eeb4d/merged\" at \"/var/lib/docker/overlay2/aa349bb52d1e7896f368c876b0715fd737263e33fdf90500dee7adc1c28eeb4d/merged/usr/share/zoneinfo/UCT\" caused \“not a directory\”"": unknown: Are you trying to mount a directory onto a file (or vice-versa)? Check if the specified host path exists and is the expected type

ERROR: for db Cannot start service db: OCI runtime create failed: container_linux.go:346: starting container process caused “process_linux.go:449: container init caused “rootfs_linux.go:58: mounting \”/etc/localtime\” to rootfs \"/var/lib/docker/overlay2/aa349bb52d1e7896f368c876b0715fd737263e33fdf90500dee7adc1c28eeb4d/merged\" at \"/var/lib/docker/overlay2/aa349bb52d1e7896f368c876b0715fd737263e33fdf90500dee7adc1c28eeb4d/merged/usr/share/zoneinfo/UCT\" caused \“not a directory\”"": unknown: Are you trying to mount a directory onto a file (or vice-versa)? Check if the specified host path exists and is the expected type
ERROR: Encountered errors while bringing up the project.

The .yml file:
version: ‘3’

services:

proxy:
image: jwilder/nginx-proxy:alpine
labels:
- “com.github.jrcs.letsencrypt_nginx_proxy_companion.nginx_proxy=true”
container_name: nextcloud-proxy
networks:
- nextcloud_network
ports:
- 80:80
- 443:443
volumes:
- ./proxy/conf.d:/etc/nginx/conf.d:rw
- ./proxy/vhost.d:/etc/nginx/vhost.d:rw
- ./proxy/html:/usr/share/nginx/html:rw
- ./proxy/certs:/etc/nginx/certs:ro
- /etc/localtime:/etc/localtime:ro
- /var/run/docker.sock:/tmp/docker.sock:ro
restart: unless-stopped

letsencrypt:
image: jrcs/letsencrypt-nginx-proxy-companion
container_name: nextcloud-letsencrypt
depends_on:
- proxy
networks:
- nextcloud_network
volumes:
- ./proxy/certs:/etc/nginx/certs:rw
- ./proxy/vhost.d:/etc/nginx/vhost.d:rw
- ./proxy/html:/usr/share/nginx/html:rw
- /etc/localtime:/etc/localtime:ro
- /var/run/docker.sock:/var/run/docker.sock:ro
restart: unless-stopped

db:
image: mariadb
container_name: nextcloud-mariadb
networks:
- nextcloud_network
volumes:
- db:/var/lib/mysql
- /etc/localtime:/etc/localtime:ro
environment:
- MYSQL_ROOT_PASSWORD=root
- MYSQL_PASSWORD=example
- MYSQL_DATABASE=cloudnext
- MYSQL_USER=nextcloud
restart: unless-stopped

app:
image: nextcloud:latest
container_name: nextcloud-app
networks:
- nextcloud_network
depends_on:
- letsencrypt
- proxy
- db
volumes:
- nextcloud:/d/Erik/Docker/containers/nextcloud/nextcloud/var/www/html
- ./app/config:/d/Erik/Docker/containers/nextcloud/nextcloud/var/www/html/config
- ./app/custom_apps:/d/Erik/Docker/containers/nextcloud/nextcloud/var/www/html/custom_apps
- ./app/data:/d/Erik/Docker/containers/nextcloud/nextcloud/var/www/html/data
- ./app/themes:/d/Erik/Docker/containers/nextcloud/nextcloud/var/www/html/themes
- /etc/localtime:/etc/localtime:ro
environment:
- VIRTUAL_HOST=nextcloud.pc.local
- LETSENCRYPT_HOST=nextcloud.pc.local
- LETSENCRYPT_EMAIL=example@mydomain.hr
restart: unless-stopped

volumes:
nextcloud:
db:

networks:
nextcloud_network:

If possible I don’t need the reverse proxy or letsencrypt

There is no /etc/localtime on Windows. Delete these lines or comment them out.