Added the docker files and ansible playbooks for two instances namely pkl and chd.

docker/playbook-chd.yml

@@ -0,0 +1,90 @@
+#################################################
+# DO Community Playbooks: Docker
+#################################################
+---
+- hosts: all
+  become: true
+  vars_files:
+    - vars/chd.yml
+
+  tasks:
+    - name: Copy dockerfile
+      synchronize: src=app dest=/tmp
+
+    - name: Build barker image
+      docker_image:
+        name: barker:latest
+        build:
+          path: /tmp/app/
+          dockerfile: /tmp/app/Dockerfile
+          pull: yes
+        state: present
+        source: build
+
+    - name: Build barker worker image
+      docker_image:
+        name: barker-worker:latest
+        build:
+          path: /tmp/app/
+          dockerfile: /tmp/app/worker.Dockerfile
+          pull: yes
+        state: present
+        source: build
+
+    - name: Upload the .env file
+      template:
+        src: "files/chd.env"
+        dest: "/var/lib/{{ host_directory }}/.env"
+
+    - name: Create barker container
+      docker_container:
+        name: "{{ host_directory }}"
+        image: barker:latest
+        state: started
+        restart_policy: "unless-stopped"
+        env_file: "/var/lib/{{ host_directory }}/.env"
+        links:
+          - "postgres:db"
+          - "redis:redis"
+        published_ports:
+          - "127.0.0.1:{{ host_port }}:80"
+        volumes:
+          - "/var/lib/{{ host_directory }}/frontend:/frontend"
+
+    - name: Create barker worker container
+      docker_container:
+        name: "{{ host_directory }}-worker"
+        image: barker-worker:latest
+        state: started
+        restart_policy: "unless-stopped"
+        env_file: "/var/lib/{{ host_directory }}/.env"
+        links:
+          - "redis:redis"
+
+
+    - name: Check if Nginx conf file exists
+      stat: path="/etc/nginx/sites-available/{{ http_conf }}"
+      register: status
+
+    - name: No need to reload Nginx
+      debug: msg= {{ "No need to reload Nginx as sites-available entries have already been created" }}
+
+    - name: Set Nginx conf file
+      when: status.stat.exists == false
+      template:
+        src: "files/nginx.conf.j2"
+        dest: "/etc/nginx/sites-available/{{ http_conf }}"
+
+    - name: Enable new site
+      when: status.stat.exists == false
+      file:
+        src: "/etc/nginx/sites-available/{{ http_conf }}"
+        dest: "/etc/nginx/sites-enabled/{{ http_conf }}"
+        state: link
+      notify: Reload Nginx
+
+  handlers:
+    - name: Reload Nginx
+      service:
+        name: nginx
+        state: reloaded