fix: build errors

- [ERR_REQUIRE_ESM]: Must use import to load ES Module: using node 12.20.0 on del-cli module
- Minifying images'.' is not recognized as an internal or external command using npx instead of running the module directly

Dockerfile

@@ -1,4 +1,4 @@
-FROM node:12.16.3 as source
+FROM node:12.20.0 as source
 WORKDIR /work
 
 COPY package-lock.json package.json npm-shrinkwrap.json ./

package.json

@@ -42,7 +42,7 @@
     "build": "cross-env-shell ENV=\"dev\" JS=\"main.js --source-map url='main.js.map',includeSources\" SASSMAP=\"--source-map true --source-map-contents true\" MINIFYMAP=\"--source-map --source-map-inline-sources\" OMAP=\"--source-map inline\" npm-run-all del makedir-css makedir-js build-p",
     "build-p": "run-p font-compile css-compile-all imagemin html js-minify js-copy-push sassdoc",
     "build-n-serve": "npm-run-all build serve",
-    "copyfiles": "./node_modules/.bin/cpy",
+    "copyfiles": "npx cpy",
     "css-compile": "npm-run-all css-compile-sass-styles css-prefix-styles css-minify-styles csso-styles",
     "css-compile-all": "npm-run-all css-compile css-compile-editor css-compile-dark csso-dark",
     "css-compile-dark": "npm-run-all css-compile-sass-dark css-prefix-dark css-minify-dark csso-editor",
@@ -59,18 +59,18 @@
     "css-prefix-dark": "cross-env-shell npm run css-prefix -- ./$ENV/css/theme-dark.css",
     "css-prefix-editor": "cross-env-shell npm run css-prefix -- ./$ENV/css/editors.css",
     "css-prefix-styles": "cross-env-shell npm run css-prefix -- ./$ENV/css/styles.css",
-    "csso-styles": "cross-env-shell ./node_modules/.bin/csso ./$ENV/css/styles.css --output ./$ENV/css/styles.css $OMAP",
-    "csso-dark": "cross-env-shell ./node_modules/.bin/csso ./$ENV/css/theme-dark.css --output ./$ENV/css/theme-dark.css $OMAP",
-    "csso-editor": "cross-env-shell ./node_modules/.bin/csso ./$ENV/css/editors.css --output ./$ENV/css/editors.css $OMAP",
+    "csso-styles": "cross-env-shell npx csso ./$ENV/css/styles.css --output ./$ENV/css/styles.css $OMAP",
+    "csso-dark": "cross-env-shell npx csso ./$ENV/css/theme-dark.css --output ./$ENV/css/theme-dark.css $OMAP",
+    "csso-editor": "cross-env-shell npx csso ./$ENV/css/editors.css --output ./$ENV/css/editors.css $OMAP",
     "del": "cross-env-shell del-cli ./$ENV",
     "dist": "cross-env-shell ENV=\"dist\" JS=\"app.js\" npm-run-all font-compile makedir-css css-compile-all imagemin html makedir-js js-minify js-copy-push sassdoc",
-    "eclint-check": "./node_modules/.bin/eclint check \"**/*\"",
-    "font": "npm run makedir-font && webfont ./assets/icons/*.svg -d ./assets/fonts -s ./assets/scss/libs/webfont/compiled --font-height 1001 --normalize true",
+    "eclint-check": "npx eclint check \"**/*\"",
+    "font": "npm run makedir-font && webfont './assets/icons/*.svg' -d './assets/fonts' -s './assets/scss/libs/webfont/compiled' --font-height 1001 --normalize true",
     "font-compile": "npm-run-all font font-copy",
     "font-copy": "cross-env-shell npm run copyfiles ./assets/fonts/*.* ./$ENV/fonts",
     "html": "cross-env-shell node ./assets/process-html.js $ENV",
-    "html-processor": "./node_modules/.bin/htmlprocessor",
-    "imagemin": "cross-env-shell ./node_modules/.bin/imagemin ./assets/img/* --out-dir ./$ENV/img",
+    "html-processor": "npx htmlprocessor",
+    "imagemin": "cross-env-shell npx imagemin ./assets/img/* --out-dir ./$ENV/img",
     "js-copy-push": "cross-env-shell npm run copyfiles ./assets/firebasePush.js ./assets/firebase-messaging-sw.js ./$ENV",
     "js-minify": "cross-env-shell uglifyjs ./assets/js/*.js --compress --mangle -o $ENV/js/$JS",
     "makedir-css": "cross-env-shell make-dir ./$ENV/css",
@@ -80,7 +80,7 @@
     "prettier-check": "prettier-check \"assets/**/*.{css,scss,html}\" \"!assets/scss/libs/**/*.{css,scss}\"",
     "sassdoc": "cross-env-shell sassdoc ./assets/scss/**/*.* -d ./$ENV/documentation",
     "semantic-release": "semantic-release",
-    "serve": "./node_modules/.bin/browser-sync start --server 'dev' -w --files 'dev' --port 3500",
+    "serve": "npx browser-sync start --server 'dev' -w --files 'dev' --port 3500",
     "watch": "run-p build-n-serve watch-all",
     "watch-all": "cross-env-shell ENV=\"dev\" JS=\"main.js --source-map url='main.js.map',includeSources\" run-p watch-js watch-img watch-font watch-sass watch-html",
     "watch-font": "onchange -k -v \"assets/icons/*.*\" -- cross-env-shell npm run font-compile",