Added draft for central postgres and mariadb. variables and networks still need to be adapted

roles/docker-postgres/handlers/main.yml

@@ -1,22 +0,0 @@
-- name: Create database
-  postgresql_db:
-    name: "{{ database_databasename }}"
-    state: present
-    login_user: postgres
-    login_password: "{{ central_postgres_password }}"
-    login_host: 127.0.0.1
-    login_port: 5432
-  listen: create database
-
-- name: Create database user
-  postgresql_user:
-    name: "{{ database_username }}"
-    password: "{{ database_password }}"
-    db: "{{ database_databasename }}"
-    priv: ALL
-    state: present
-    login_user: postgres
-    login_password: "{{ central_postgres_password }}"
-    login_host: 127.0.0.1
-    login_port: 5432
-  listen: create database

roles/docker-postgres/tasks/main.yml

@@ -11,12 +11,44 @@
     detach: yes
     env:
       POSTGRES_PASSWORD: "{{ central_postgres_password }}"
+      POSTGRES_INITDB_ARGS: "--encoding=UTF8 --locale=C" # Necessary for docker-matrix
     networks:
       - name: postgres_network
     published_ports:
       - "127.0.0.1:5432:5432"
   when: run_once_docker_postgres is not defined
 
+- name: wait for availability of postgres
+  wait_for:
+    host: "127.0.0.1"
+    port: "5432"
+    delay: 0      
+    timeout: 120
+  when: run_once_docker_postgres is not defined  
+
+- name: Create database
+  postgresql_db:
+    name: "{{ database_databasename }}"
+    state: present
+    login_user: postgres
+    login_password: "{{ central_postgres_password }}"
+    login_host: 127.0.0.1
+    login_port: 5432
+  listen: create database
+
+- name: Create database user
+  postgresql_user:
+    name: "{{ database_username }}"
+    password: "{{ database_password }}"
+    db: "{{ database_databasename }}"
+    priv: ALL
+    state: present
+    login_user: postgres
+    login_password: "{{ central_postgres_password }}"
+    login_host: 127.0.0.1
+    login_port: 5432
+  listen: create database
+
 - name: Run the docker_postgres tasks once
   set_fact:
     run_once_docker_postgres: true