docker-compose.yml updated.

docker-compose.yml

+# NOTE! Volume "conduit-db" and network "conduit-network" must be created before running "docker-compose up".
+# They can be created with the following commands: "docker volume create conduit-db" and "docker network create conduit-network".
+
+version: '3.3'
+
+services:
+  mongo:
+    image: mongo
+    container_name: mongo-cont
+    volumes:
+      - conduit-db:/data/db
+    restart: always
+
+  backend:
+    depends_on:
+      - mongo
+    image: gitlab.labranet.jamk.fi:4567/te-team1/conduit-backend:latest
+    container_name: takakontti
+    ports:
+      - "8080:3000"
+    restart: always
+    environment:
+      MONGODB_URI: mongodb://mongo-cont/conduitdb
+      SECRET: kiasdasdfffdeedda
+
+  frontend:
+    image: gitlab.labranet.jamk.fi:4567/te-team1/conduit-frontend:latest
+    container_name: fronttikontti
+    ports:
+      - "4100:4100"
+    restart: always
+    environment:
+      REACT_APP_API_ROOT: https://corporation.devopskoulutus.net/api
+
+volumes:
+  conduit-db:
+    external: true
+
+networks:
+  default:
+    external:
+      name: conduit-network
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