anchor.diff:  
   Two volumes are defined:
   
  -* `/var/ontrack/data` - contains the data for Ontrack (files & database) but also the log files. This is typically provided through a data volume container.
  +* `/var/ontrack/data` - contains some working files but also the log files.
   * `/var/ontrack/conf` - contains the <<configuration-properties,configuration files>> for Ontrack (see later).
   
   [[installation-docker-basic]]
  
positive.code: memory if you intend to host a lot of projects. See the different installation
  modes (Docker, RPM, etc.) to know how to setup the memory settings.
  
  Ontrack stores its data in a local H2 database. This one can grow up to 500 Mb
  for big volumes (hundreds of projects).
  
  [[installation-docker]]
  === Installing using Docker
  
negative.code:    ...
     --env "JAVA_OPTIONS=-Xmx2048m" \
     ...
  ----
  
  [[installation-docker-compose]]
  ==== Docker Compose deployment
  
  Create the following file:
  
  [source,yaml]
  .docker-compose.yml
  ----
  version: "2.1"
  
  services:
    # Ontrack container
    ontrack:
      image: nemerosa/ontrack:3
      environment:
          PROFILE: prod
      links:
        - "postgresql:postgresql"
  
    # Postgresql database
    postgresql:
      image: postgres:9.5.2
      environment:
        POSTGRES_DB      : ontrack
        POSTGRES_USER    : ontrack
        POSTGRES_PASSWORD: ontrack
      ports:
        - "5432"
  
  ----
  
  [[installation-rpm]]
  