Container to run other containers as cron jobs.
The following command will spawn a container named testCronAbc every minute.
The testCronAbc container will print the value of the environment variable AAA, 123 in this case.
cat > gen_env_file <<EOL
TASK_SCHEDULE=* * * * *
COPY_ENV_VARS=AAA,BBB
AAA=123
BBB=456
EOL
cat > gen_containerInfo.json <<EOL
{
"Image": "ubuntu:latest",
"Name": "testCronAbc",
"Cmd": [
"printenv",
"AAA"
]
}
EOL
docker run --rm -d --name docker-cron \
-v /var/run/docker.sock:/var/run/docker.sock \
-v $PWD/gen_containerInfo.json:/usr/src/containerInfo.json \
--env-file gen_env_file \
camilin87/docker-cronThe cron container behavior can be tweaked with the following environment variables
# whether to display verbose logging
DOCKER_CRON_DEBUG_LOG_ENABLED=1
# the cron schedule
TASK_SCHEDULE=* * * * *
# comma-separated list of the variables
# that need to be trickled down to the spawned containers
COPY_ENV_VARS=VAR1,VAR2