Revert netlify plugin usage until issue is fixed

Issue: opennextjs/opennextjs-netlify#67

Author: ahaasler

.gitignore

@@ -32,3 +32,5 @@ yarn-error.log*
 
 # netlify
 .netlify
+/out_publish/
+/out_functions/

netlify.toml

@@ -1,4 +1,4 @@
 [build]
-command = "yarn build"
-[[plugins]]
-package = "@netlify/plugin-nextjs"
+command = "yarn build-netlify"
+functions = "out_functions"
+publish = "out_publish"

package.json

@@ -5,6 +5,8 @@
 	"scripts": {
 		"dev": "next dev",
 		"build": "next build",
+		"build-netlify": "next build",
+		"postbuild-netlify": "next-on-netlify",
 		"preexport": "next build",
 		"export": "next export",
 		"serve": "serve out",
@@ -28,12 +30,12 @@
 		"tinacms": "^0.33.0"
 	},
 	"devDependencies": {
-		"@netlify/plugin-nextjs": "^1.0.2",
 		"@tailwindcss/forms": "^0.2.1",
 		"@tailwindcss/typography": "^0.3.1",
 		"@types/node": "^14.0.5",
 		"@types/react": "^17.0.0",
 		"autoprefixer": "^10.1.0",
+		"next-on-netlify": "^2.6.3",
 		"postcss": "^8.2.0",
 		"serve": "^11.3.2",
 		"tailwindcss": "^2.0.1",