Add docker-compose and database.yml for mysql2 and postgresql

Author: kfischer-okarin

config/database.mysql.yml

@@ -0,0 +1,18 @@
+default: &default
+  adapter: mysql2
+  host: <%= ENV.fetch('DB_HOST', '127.0.0.1') %>
+  port: <%= ENV.fetch('DB_PORT', '3306') %>
+  username: root
+  password: password
+
+production:
+  <<: *default
+  database: redmine_production
+
+development:
+  <<: *default
+  database: redmine_development
+
+test:
+  <<: *default
+  database: redmine_test

config/database.postgres.yml

@@ -0,0 +1,19 @@
+default: &default
+  adapter: postgresql
+  encoding: utf8
+  host: <%= ENV.fetch('DB_HOST', 'localhost') %>
+  port: <%= ENV.fetch('DB_PORT', '5432') %>
+  username: postgres
+  password: postgres
+
+production:
+  <<: *default
+  database: redmine_production
+
+development:
+  <<: *default
+  database: redmine_development
+
+test:
+  <<: *default
+  database: redmine_test

docker-compose.mysql.yml

@@ -0,0 +1,14 @@
+version: '3.4'
+services:
+  db:
+    image: mysql:${DB_VERSION:-latest}
+    environment:
+      MYSQL_ROOT_PASSWORD: password
+    volumes:
+      - mysql_data:/var/lib/mysql
+    ports:
+      - "3306:3306"
+
+
+volumes:
+  mysql_data:

docker-compose.postgres.yml

@@ -0,0 +1,15 @@
+version: '3.4'
+services:
+  db:
+    image: postgres:${DB_VERSION:-latest}
+    volumes:
+      - postgres_data:/var/lib/postgresql
+    ports:
+      - "5432:5432"
+    environment:
+      LANG: C.UTF-8
+      POSTGRES_INITDB_ARGS: --locale=C.UTF-8
+      POSTGRES_PASSWORD: postgres
+
+volumes:
+  postgres_data: