Requirements:
  - Docker Engine (https://docs.docker.com/engine/install/ubuntu/);
  - Docker Compose (https://docs.docker.com/compose/install/);

1. Docker:
#build image
cd ./docker-syslog/rsyslog/ && docker build --build-arg PATH_LOGS_INSIDE=/var/log/agentlogs/ -t dev-syslog .

#run container
docker run --restart always -d --cap-add SYSLOG --privileged -v /var/logs:/var/log -p 514:514 -p 514:514/udp --name rsyslog dev-syslog

#send test syslog message
logger -n 192.168.0.40 -t dev-app -p user.notice "Testing syslog server - some text..."
docker run --log-driver syslog --log-opt syslog-address=tcp://192.168.0.40 alpine echo $(uname -a)

#how the message was processed (on host server)
ls -la /var/logs/agentlogs/

#running processes
docker ps

#docker containers list
docker containers ls --all

#docker image list
docker image ls --all

#remove container (if nessesary)
docker container rm <container_name>

#remove image (if nessesary)
docker image rm -f <image_name>

#view status
docker ps -f name=rsyslog


2. Docker Compose:
#build
docker-compose build --build-arg PATH_LOGS_INSIDE=/var/log/agentlogs/

#run
docker-compose up -d

#stop
docker-compose stop

3. Ansible
#install
run ./install-syslog.sh (must be rights to execute, ex.: chmod u+x ./install-syslog.sh);