Fix dependency issues in frontend

Author: Consek

frontend/.dockerignore

@@ -1,4 +1,3 @@
 node_modules
 *.log
-package-lock.json
 dist

frontend/Dockerfile

@@ -1,6 +1,6 @@
 FROM node:15.7.0-alpine As builder
 WORKDIR /usr/src/app
-COPY package.json ./
+COPY package.json package-lock.json ./
 RUN npm install
 COPY . .
 RUN npm run build