Adding docker directory with docker support

docker/docker-compose.yml

@@ -0,0 +1,21 @@
+version: "3.3"
+services:
+  db:
+    image: "postgres:${POSTGRES_VER}"
+    environment:
+     - "POSTGRES_PASSWORD=${POSTGRES_PASSWORD}"
+     - "POSTGRES_USER=${POSTGRES_USER}"
+     - "POSTGRES_DB=${POSTGRES_DB}"
+
+  pyshelf:
+    build:
+      context: ./
+      dockerfile: Dockerfile
+    volumes:
+      - "${LOCAL_BOOK_DIR}:/Books"
+    ports:
+      - "8088:8000"
+    links:
+      - "db:db"
+    depends_on:
+      - db