added docker stuff and updated next.js to ^7.0.0

package.json

@@ -33,7 +33,7 @@
     "start:dev": "node src/",
     "start": "cross-env NODE_ENV=production node src/",
     "test": "npm run lint && npm run build && npm run mocha",
-    "postinstall": "node ./genSecret.js"
+    "postinstall": "node ./genSecret.js; exit 0"
   },
   "dependencies": {
     "@feathersjs/authentication": "^2.1.5",
@@ -58,7 +58,7 @@
     "isomorphic-unfetch": "^2.0.0",
     "milligram": "^1.3.0",
     "nedb": "^1.8.0",
-    "next": "^6.0.0",
+    "next": "^7.0.0",
     "react": "^16.3.2",
     "react-dom": "^16.3.2",
     "react-markdown": "^3.3.0",
@@ -71,7 +71,7 @@
     "winston": "^2.4.1"
   },
   "devDependencies": {
-    "@zeit/next-sass": "^0.2.0",
+    "@zeit/next-sass": "^1.0.1",
     "babel-eslint": "^8.2.3",
     "eslint": "^4.19.1",
     "eslint-plugin-react": "^7.8.2",