Well, as a matter of fact, I have solved it, but it took me some time to get it all together. Apart from "itflow" and "itflow-db" containters I have added a third one "itflow-cron". Then I created a Dockerfile.cron from which the container is build and a crontab file that is then copied to itflow-cron container. It seems to work rather nicely. Here is what worked for me:
docker-compose.yml
version: "3.3"
########################### NETWORKS
networks:
reverseproxy-nw:
external: true
itflow-db:
external: false
########################### ITFLOW
services:
itflow:
hostname: itflow
container_name: itflow
# Comment out build for docker.io image
image: lued/itflow
# build: .
restart: unless-stopped
depends_on:
- itflow-db
networks:
- reverseproxy-nw
- itflow-db
ports:
- "80:8080"
environment:
- TZ=$TZ
- ITFLOW_NAME=ITFlow
- ITFLOW_URL=support.$ROOT_DOMAIN
- ITFLOW_PORT=8080
- ITFLOW_REPO=github.com/itflow-org/itflow
- ITFLOW_REPO_BRANCH=master
- ITFLOW_LOG_LEVEL=info
- ITFLOW_DB_HOST=itflow-db
- ITFLOW_DB_PASS=$ITFLOW_DB_PASS
volumes:
- /services/docker/itflow/data:/var/www/html
itflow-db:
hostname: itflow-db
container_name: itflow-db
image: mariadb:10.6.11
restart: always
networks:
- itflow-db
ports:
- "13936:3306"
environment:
- MARIADB_RANDOM_ROOT_PASSWORD=true
- MARIADB_DATABASE=itflow
- MARIADB_USER=itflow
- MARIADB_PASSWORD=$ITFLOW_DB_PASS
- MARIADB_HOST=%
volumes:
- /services/docker/itflow/db:/var/lib/mysql/
- /services/docker/itflow/db/scripts:/docker-entrypoint-initdb.d
itflow-cron:
hostname: itflow-cron
container_name: itflow-cron
build:
context: /services/docker/itflow/config
dockerfile: Dockerfile.cron
volumes:
- /services/docker/itflow/data:/var/www/html
- /services/docker/itflow/config:/mnt/config
networks:
- reverseproxy-nw
- itflow-db
restart: unless-stopped
Dockerfile.cron:
FROM php:8.2-cli-buster
# Set working directory
WORKDIR /var/www/html
# Install dependencies
RUN apt-get update && apt-get install -y cron libltdl7 libc-client-dev libkrb5-dev
RUN docker-php-ext-configure imap --with-kerberos --with-imap-ssl
RUN docker-php-ext-install mysqli imap
RUN docker-php-ext-enable mysqli imap
RUN pecl install mailparse && docker-php-ext-enable mailparse
# Set your timezone here
RUN ln -snf /usr/share/zoneinfo/${TZ} /etc/localtime && echo ${TZ} > /etc/timezone
# Copy crontab file to the cron.d directory as a itflow-cron file
COPY crontab /etc/cron.d/itflow-cron
# Give execution rights on the cron job
RUN chmod 0644 /etc/cron.d/itflow-cron
# Apply cron job
RUN crontab /etc/cron.d/itflow-cron
# Create the log file to be able to run tail
RUN touch /var/log/cron.log
# Run the command on container startup
CMD cron && tail -f /var/log/cron.log
crontab:
* * * * * /usr/local/bin/php /var/www/html/cron_ticket_email_parser.php [KEY] >> /var/log/cron_ticket_email_parser.log 2>&1
* * * * * /usr/local/bin/php /var/www/html/cron_mail_queue.php [KEY] >> /var/log/cron_mail_queue.log 2>&1
0 2 * * * /usr/local/bin/php /var/www/html/cron.php [KEY] >> /var/log/cron.log 2>&1
# don't remove the empty line at the end
Btw there is an error in docs here, because the email parser script has a different name now.
Then run docker-compose build, docker-compose up -d and you should be ready to go.
P.S.: Don't forget to create .env file with variables that are referenced in docker-compose.yml. And if you are using Portainer, this does not work because Portainer has problems with paths referenced during build and there currently seems to be no way around it.