ansible-docker-containers/dockerContainer.yml

# Define an empty list for the mappings to be assigned to
- set_fact:
    mappings: []
  tags: always


# Container name always equals the Dict name
- set_fact: container_Name="{{ item.value.name | default(item.key) }}"
  tags: always
# Container hostname is the container name by default but can be overridden by setting 'hostname'
- set_fact: container_hostname="{{ item.value.hostname | default (container_Name) }}"
  tags: always
- set_fact: container_configDir="{{ containerConfigDir }}/container-configs/{{ container_Name }}/"
  tags: always
# Create the config storage directory if it doesnt already exist
- name: "Create config dir"
  file:
    path: "{{ container_configDir }}"
    state: directory
  tags: always

#----------------------------------Check NETWORK----------------------------------
  #If the network varibale isnt defined then dont error out, set the network variable to an empty list
- name: Setup a blank network variable
  set_fact: net_checked=[]
  when: item.value.networks is not defined
  tags: always
- name: Copy network variables into config
  set_fact: net_checked="{{ item.value.networks }}"
  when: item.value.networks is defined
  tags: always

#- name: Show IP
#  debug: msg="{{item.value.networks[0].ipv4_address | default(item.value.hostIP)}}"
#----------------------------------/Check NETWORK----------------------------------



#----------------------------------VOLUMES----------------------------------
#Do all of the defined mappings exist?
#Create them if not
- set_fact: volumes_Defined=0
  tags: always
- name: Check if volumes have been defined or not
  set_fact:
    volumes_Defined: 1
  when: item.value.mappings.volumes is defined
  tags: always
- name: "Volume mappings for {{ container_Name }}"
  include: dockerVolume.yml
  with_dict: "{{ item.value.mappings.volumes }}"
  when: volumes_Defined == 1
  tags: always
#Note, the volume gets added to the mapping list in the dockerVolume.yml file becuase in there it knows the actual name of the volume
#----------------------------------/VOLUMES----------------------------------




#----------------------------------TEMPLATES----------------------------------
#Only copy template files if there are templates defined in the incoming defintion dict
- set_fact: templates_Defined=0
  tags: always
- name: Check if templates have been defined or not
  set_fact:
    templates_Defined: 1
  when: item.value.mappings.templates is defined
  tags: always
#- debug: msg="Templates not defined"
#  when: templates_Defined is not defined
#
#- debug: msg="{{ item.value.mappings.templates }}"

  #Copy all of the defined templates to the container host into the {{ container_configDir }} ready for mapping to the container later
- name: "Template mappings for {{ container_Name }}"
  #Files will be copied to the 'config' dir as defined by container_configDir, they will be stored using their template file name but with the '.j2' stripped
  #Need to ensure  you dont have duplicate files names here
  template: src="{{ container_Name }}/{{ outer_item.value.src }}" dest="{{ container_configDir }}/{{ outer_item.value.src.split(".j2")[0] }}" mode=0644
  with_dict: "{{ item.value.mappings.templates }}"
  loop_control:
    loop_var: outer_item
  when: templates_Defined ==1 and outer_item.value.generic is not defined
  tags: always
  register: regular_template
  notify: Restart container
  #Copy templates form a generic dir, allow ansible to search
- name: "Generic template mappings for {{ container_Name }}"
  #Files will be copied to the 'config' dir as defined by container_configDir, they will be stored using their template file name but with the '.j2' stripped
  #Need to ensure  you dont have duplicate files names here
  template: src="{{ outer_item.value.src }}" dest="{{ container_configDir }}/{{ outer_item.value.src.split(".j2")[0] }}"  mode=0644
  with_dict: "{{ item.value.mappings.templates }}"
  loop_control:
    loop_var: outer_item
  when: templates_Defined ==1 and outer_item.value.generic is defined
  tags: always
  register: generic_template
  notify: Restart container
- name: Append templated files to the mapping list
  set_fact:
    #build a list to pass to docker containing the source of the file(As on disk on the host) and the destination mount within the container
    #Also allows the passing of 'params' which is rw or ro, defaults to rw
    #mappings: "{{ mappings  + ['type=\"bind\", source=\"' +  container_configDir +  item.value.src.split('.j2')[0] + '\",target=\"' + item.value.dest + '\",readonly=\"' + item.value.readonly | default('false') +'\"'] }}"
    mappings: "{{ mappings  + [ container_configDir +  outer_item.value.src.split('.j2')[0] + ':' + outer_item.value.dest + ':' + outer_item.value.params | default('rw') ] }}"
  with_dict: "{{ item.value.mappings.templates }}"
  loop_control:
    loop_var: outer_item
  when: templates_Defined ==1
  tags: always

 #type = "bind",target = "/usr/share/nginx/html",source = "/home/bfnadmin/www",readonly = false


#----------------------------------/TEMPLATES----------------------------------





#----------------------------------FILES----------------------------------
- set_fact: files_Defined=0
  tags: always
#Only copy files if there are templates defined in the incoming defintion dict
- name: Check if Files have been defined or not
  set_fact:
    files_Defined: 1
  when: item.value.mappings.files is defined
  tags: always
#Copy all of the defined files to the container host into the {{ container_configDir }} ready for mapping to the container later
- name: "File mappings for {{ container_Name }}"
  #Files will be copied to the 'config' dir as defined by container_configDir, they will be stored using their file name
  #Need to ensure  you dont have duplicate files names here
  copy: src="{{ container_Name }}/{{ outer_item.value.src }}" dest="{{ container_configDir }}/{{ outer_item.key }}"  mode=0644
  with_dict: "{{ item.value.mappings.files }}"
  loop_control:
    loop_var: outer_item
  when: files_Defined == 1 and outer_item.value.generic is not defined and outer_item.value.src_text is not defined
  tags: always
  register: file_copy
  notify: Restart container
#Copy files from a generic dir, allow ansible to search
- name: "Generic File mappings for {{ container_Name }}"
  #Files will be copied to the 'config' dir as defined by container_configDir, they will be stored using their file name
  #Need to ensure  you dont have duplicate files names here
  copy: src="{{ outer_item.value.src }}" dest="{{ container_configDir }}/{{ outer_item.key }}"  mode=0644
  with_dict: "{{ item.value.mappings.files }}"
  loop_control:
    loop_var: outer_item
  when: files_Defined == 1 and outer_item.value.generic is defined and outer_item.value.src_text is not defined
  tags: always
  register: generic_copy
  notify: Restart container  
#Create files based on the suplied src_text param
- name: "Text based file creation for {{ container_Name }}"
  #Files will be copied to the 'config' dir as defined by container_configDir, they will be stored using their file name
  #Need to ensure  you dont have duplicate files names here
  copy: content="{{ outer_item.value.src_text }}" dest="{{ container_configDir }}/{{ outer_item.key }}"  mode=0644
  with_dict: "{{ item.value.mappings.files }}"
  loop_control:
    loop_var: outer_item
  when: files_Defined == 1 and outer_item.value.src_text is defined
  tags: always
  register: text_copy
  notify: Restart container

- name: Append static remote files to the mapping list
  set_fact:
    #build a list to pass to docker containing the source of the file(As on disk on the host) and the destination mount within the container
    #Also allows the passing of 'params' which is rw or ro, defaults to rw
    mappings: "{{ mappings  + [ container_configDir +  outer_item.key + ':' + outer_item.value.dest + ':' + outer_item.value.params | default('rw') ] }}"
  with_dict: "{{ item.value.mappings.files }}"
  loop_control:
    loop_var: outer_item
  when: files_Defined == 1
  tags: always
#----------------------------------/FILES----------------------------------




#----------------------------------LOCAL----------------------------------
#Local files alreeady exist on the host, commonly local time and or netns for namespace, could also be locl disk drives?
#Nothing gets copied for local mappings, just defintiions added to the mapping list
#Only copy files if there are local files defined in the incoming defintion dict
- set_fact: local_Defined=0
  tags: always
- name: Check if Local files have been defined or not
  set_fact:
    local_Defined: 1
  when: item.value.mappings.local is defined
  tags: always
#- debug: msg="local not defined"
#  when: local_Defined is not defined

- name: Append static local files to the mapping list
  set_fact:
    #build a list to pass to docker containing the source of the file(As on disk on the host) and the destination mount within the container
    #Also allows the passing of 'params' which is rw or ro, defaults to rw
    #mappings: "{{ mappings  + ['type=\"bind\", source=\"' +   item.value.src + '\",target=\"' + item.value.dest + '\",readonly=\"' + item.value.readonly | default('false') +'\"'] }}"
     mappings: "{{ mappings  + [ outer_item.value.src + ':' + outer_item.value.dest + ':' + outer_item.value.params | default('rw') ] }}"
  with_dict: "{{ item.value.mappings.local }}"
  loop_control:
    loop_var: outer_item
  when: local_Defined == 1
  tags: always
#----------------------------------/LOCAL----------------------------------


#----------------------------------Check ENV----------------------------------
#If the env varibale isnt defined then dont error out, set the network variable to an empty list
- name: Setup a blank env variable
  set_fact: env_checked={}
  when: item.value.env is not defined
  tags: always
- name: Copy env variables into config
  set_fact: env_checked="{{ item.value.env }}"
  when: item.value.env is defined
  tags: always
#----------------------------------/Check ENV----------------------------------

- name: Setup default values for this container
  set_fact:
    default:
      name: "{{ container_Name }}"
      hostname: "{{ item.value.hostname | default(container_Name) }}"
      command: "{{ item.value.command | default('') }}"
      pull: "{{ item.value.pull | default('false') }}"
      recreate: "{{ item.value.recreate | default('false') }}"
      image: "{{ item.value.image }}"
      state: "{{ item.value.start | default ('started') }}"
      restart: "{{ item.value.restart | default ('no') }}"
      restart_policy: "{{ item.value.restart_policy | default ('always') }}"
      purge_networks: "{{ item.value.purge_networks | default ('yes') }}"
      networks: "{{ net_checked }}"
      volumes: "{{ mappings }}"
      env: "{{ env_checked }}"
      privileged: "{{ item.value.privileged | default ('no') }}"
      network_mode: "{{ item.value.network_mode | default ('default') }}"
      shm_size: "{{ item.value.shm_size | default ('64M') }}"
      ports: "{{ item.value.ports | default ([]) }}"

  tags: always

- name: Setup devices_override blank
  set_fact:
    devices_override:
  tags: always

- name: Setup ulimit_override blank
  set_fact:
    ulimit_override:
  tags: always

#----------Merge ulimits--------------
- name: Apply conditional override
  set_fact:
    ulimit_override:
      ulimits: "{{ item.value.ulimits }}" 
  when:  item.value.ulimits is defined
  tags: always

- name: Merge the two lists
  set_fact:
    ulimits_merged: "{{ default | combine(ulimit_override, recursive=true) }}"
  tags: always

#----------Merge devices--------------
- name: Apply conditional override
  set_fact:
    devices_override:
      devices: "{{ item.value.devices }}" 
  when: item.value.devices is defined
  tags: always

- name: Merge the two lists
  set_fact:
    final_merged: "{{ ulimits_merged | combine(devices_override, recursive=true) }}"
  tags: always

- name: debug value
  debug:
    msg: "{{final_merged}}"
  tags: always

- name: "Container {{ container_Name }}"
  become: true
  docker_container: "{{ final_merged }}"
  tags: always