add test build script

package.json

@@ -24,23 +24,22 @@
   "files": [
     "/out"
   ],
-  "engines": {
-    "node": ">=16.0.0"
-  },
   "scripts": {
-    "build": "npm run clean && npm run tsc",
+    "prebuild": "npm run clean",
+    "build": "tsc --pretty  --project tsconfig.prod.json",
+    "build:test": "tsc --pretty  --project tsconfig.test.json",
     "clean": "npx rimraf ./out ./coverage ./test-results",
     "docker:build": "docker build --compress -t test-pdf-to-png-converter .",
     "predocker:run": "npm run clean",
     "docker:run": "docker run --rm -it -v $PWD/test-results:/usr/pkg/test-results test-pdf-to-png-converter",
+    "predocker:test": "tsc --project tsconfig.test.json",
     "docker:test": "mocha",
     "license-checker": "npx license-checker --production --onlyAllow 'MIT; MIT OR X11; BSD; ISC; Apache-2.0; Unlicense'",
     "lint": "eslint .",
     "lint:fix": "npm run lint -- --fix",
-    "pretest": "npm run clean && npx tsc --project tsconfig.test.json",
+    "pretest": "npm run clean && npm run build:test",
     "test": "mocha",
-    "test:docker": "npm run docker:build && npm run docker:run",
-    "tsc": "tsc --pretty --project tsconfig.prod.json"
+    "test:docker": "npm run docker:build && npm run docker:run"
   },
   "dependencies": {
     "canvas": "^2.11.2",
@@ -59,5 +58,8 @@
     "png-visual-compare": "^1.2.0",
     "ts-node": "^10.9.1",
     "typescript": "^5.3.2"
+  },
+  "engines": {
+    "node": ">=16.0.0"
   }
 }