add docker-compose with backend

docker-compose.yml

+version: '3.0'
+
+services:
+
+  gateway:
+    image: dnapef/gateway:${TAG:-latest}
+    depends_on:
+      - backend
+    ports:
+      - 443:8443
+    volumes:
+      - gateway_config:/workspace/config
+
+  redirect:
+    image: dnapef/redirect
+    ports:
+      - 80:80
+
+  backend:
+    image: dnapef/backend:${TAG:-latest}
+    depends_on:
+      - postgres
+    volumes:
+      - backend_db:/home/app/db
+      - backend_logs:/home/app/logs
+      - backend_config:/home/app/config
+
+  postgres:
+    image: postgres:13
+    environment:
+      POSTGRES_DB: dna_analyser
+      POSTGRES_USER: ${POSTGRES_USER:-developer}
+      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:-password}
+      PGDATA: /data/postgres
+    volumes:
+      - postgres:/data/postgres
+    ports:
+      - 5432:5432
+
+  pgadmin:
+    image: dpage/pgadmin4:latest
+    depends_on:
+      - postgres
+    environment:
+      PGADMIN_DEFAULT_EMAIL: ${PGADMIN_DEFAULT_EMAIL:-user@mendelu.cz}
+      PGADMIN_DEFAULT_PASSWORD: ${PGADMIN_DEFAULT_PASSWORD:-user}
+    volumes:
+      - pgadmin:/root/.pgadmin
+    ports:
+      - 5050:80
+
+
+
+volumes:
+  postgres:
+  pgadmin:
+  gateway_config:
+  backend_db:
+  backend_logs:
+  backend_config:
+