How to access docker compose mounted volume from inside the container - docker

Question

I am mounting a local file inside a docker container through the docker-compose.yml file:
version: '3'
services:
myapp:
build:
context: ./dockerfiles
dockerfile: myapp.Dockerfile
args:
- UID=1000
- GID=1000
network_mode: host
volumes:
- ./volumes/logs:/opt/myapp/logs
The mounted folder belongs to my user(uid: 1000, gid:1000) and these are the ids that the docker user gets, but the docker user cannot write to the mounted folder (permission denied).
Dockerfile:
FROM centos:7
ARG UID=1000
ARG GID=1000
RUN yum -y update && \
yum -y install epel-release && \
yum -y install passwd curl jq supervisor iputils openssl-devel
RUN yum -y clean all
RUN useradd -m -s /bin/sh user && \
passwd -d user && \
usermod -o -u ${UID} user && \
groupmod -o -g ${GID} user
VOLUME ["/opt/myapp/logs"]
ADD myapp /opt/myapp/app
ADD supervisor/services.ini /etc/supervisord.d/services.ini
ADD start.sh /
RUN chown -R user:user /opt/myapp
RUN chown user:user /start.sh
USER user
CMD ["/start.sh"]
start.sh
exec supervisord -c /etc/supervisord.conf -n
service.ini
[program:myapp]
user = user
autorestart = true
stdout_logfile = /dev/stdout
stdout_logfile_maxbytes = 0
stderr_logfile = /dev/stderr
stderr_logfile_maxbytes = 0
command = /opt/myapp/app
My app is run with user and it cannot write it's logs in the mounted folder.
My goal is to access the logs from outside the docker container.
Even if I run with the root user inside the container, I still cannot access the mounted folder!