Cron + docker container

Hi! I am sorry, if this place is not the correct one for this question.

I have docker-container, one of 5 containers. I run cron commands there, and cron jobs are volumed to the container.

FROM php:7.1.5-cli
RUN echo “deb experimental main” >> /etc/apt/sources.list
RUN apt-get update
RUN apt-get install -y cron curl zip unzip g++
RUN apt-get -t experimental install -y libicu-dev
RUN docker-php-ext-install pdo_mysql intl opcache
RUN mkdir /var/log/cron
ADD ./docker/cron/jobs.txt /cron.txt
RUN crontab /cron.txt
CMD [“cron”, “-f”]

Everything is ok. BUT when i change jobs from host (manually or by calling git pull and fetching new ones from repo) file itself updates, but cron -l shows old one. Thats ok i assume, until i restart cron, BUT even when i do so by calling docker-compose rm cron, or just docker-compose restart cron, nothing happens i still see old cron within cron -l command, but file itself is updated, what am i doing wrong?

Docker on windows 10 Docker version 17.03.1-ce, build c6d412e