Initial rough commit to save the code before cleanup

postgres/files/info.php.j2

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+<?php
+phpinfo();

postgres/files/nginx.conf.j2

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+server {
+        listen {{ http_port }};
+        root /var/www/html;
+        index index.php index.html index.htm index.nginx-debian.html;
+        server_name {{ http_host }};
+
+        location / {
+                try_files $uri $uri/ =404;
+        }
+
+        location ~ \.php$ {
+                include snippets/fastcgi-php.conf;
+                fastcgi_pass unix:/var/run/php/php7.2-fpm.sock;
+        }
+
+        location ~ /\.ht {
+                deny all;
+        }
+}

postgres/playbook.yml

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+#################################################
+# DO Community Playbooks: Docker
+#################################################
+---
+- hosts: all
+  become: true
+  vars_files:
+    - vars/default.yml
+
+  tasks:
+    - name: Pull default Postgresql image
+      docker_image:
+        name: "{{ postgres_image }}"
+        source: pull
+
+    # Creates the number of containers defined by the variable create_containers, using values from vars file
+    - name: Create postgres container
+      docker_container:
+        name: "{{ postgres_name }}"
+        image: "{{ postgres_image }}"
+        state: started
+        env:
+          POSTGRESQL_USER: "{{ pg_user }}"
+          POSTGRESQL_PASSWORD: "{{ pg_password }}"
+          POSTGRESQL_DATABASE: 'postgres'
+          PGDATA: '/var/lib/postgresql/data/pgdata'
+        exposed_ports:
+          - 5432
+        published_ports:
+          - 5432:5432
+        volumes:
+          - /var/lib/postgresql/data:/var/lib/postgresql/data

postgres/readme.md

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+# Docker on Ubuntu 18.04
+
+This playbook will install Docker an Ubuntu 18.04 machine, as explained in the guide on
+[How to Use Ansible to Install and Set Up Docker on Ubuntu 18.04](https://www.digitalocean.com/community/tutorials/how-to-use-ansible-to-install-and-set-up-docker-on-ubuntu-18-04).
+A number of containers will be created with the options specified in the `vars/default.yml` variable file.
+
+## Settings
+
+- `create_containers`: number of containers to create.
+- `default_container_name`: default name for new containers.
+- `default_container_image`: default image for new containers.
+- `default_container_command`: default command to run on new containers.
+
+
+## Running this Playbook
+
+Quick Steps:
+
+### 1. Obtain the playbook
+```shell
+git clone https://github.com/do-community/ansible-playbooks.git
+cd ansible-playbooks/docker_ubuntu1804
+```
+
+### 2. Customize Options
+
+```shell
+nano vars/default.yml
+```
+
+```yml
+#vars/default.yml
+---
+create_containers: 4
+default_container_name: docker
+default_container_image: ubuntu
+default_container_command: sleep 1d
+```
+
+### 3. Run the Playbook
+
+```command
+ansible-playbook -l [target] -i [inventory file] -u [remote user] playbook.yml
+```
+
+For more information on how to run this Ansible setup, please check this guide: [How to Use Ansible to Install and Set Up Docker on Ubuntu 18.04](https://www.digitalocean.com/community/tutorials/how-to-use-ansible-to-install-and-set-up-docker-on-ubuntu-18-04).

postgres/vars/default.yml

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+---
+postgres_name: postgres
+postgres_image: postgres
+pg_user: postgres
+pg_password: '123456'
+data_location: /var/lib/postgresql/data
+