Optimize Docker (#575)

* reduce docker dev size

* reduce docker prod size

* fix lint

* add gunicorn

* fix bandit reported issues

* add docs external link icon

* add env vars to docs

* add permission to docker

* merge to one backend Dockerfile

* fix codefactor issues

* add docs for puid/pgid

* add docker healthcheck

docs/docs/assets/js/extra.js

@@ -0,0 +1,11 @@
+/* Add target="_blank" to external links */
+/* Source: https://html.com/attributes/a-target/#:~:text=browser */
+function externalLinks() {
+  for (var c = document.getElementsByTagName("a"), a = 0; a < c.length; a++) {
+    var b = c[a];
+    b.getAttribute("href") &&
+      b.hostname !== location.hostname &&
+      (b.target = "_blank");
+  }
+}
+externalLinks();

docs/docs/assets/stylesheets/custom.css

@@ -33,6 +33,12 @@ a.md-button.md-button:hover {
   color: #ffffff;
 }
 
+/* Add icon after external links */
+/* Ignore auto-generated material theme links */
+a[target="_blank"]:not([class*="md-"]):after {
+  content: " " url("../svg/open-in-new.svg");
+}
+
 /* Site width etc.*/
 .md-grid {
   max-width: 64rem !important;

docs/docs/assets/svg/open-in-new.svg

@@ -0,0 +1,3 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" viewBox="0 0 24 24">
+<path fill="rgb(229,131,37)" d="M14,3V5H17.59L7.76,14.83L9.17,16.24L19,6.41V10H21V3M19,19H5V5H12V3H5C3.89,3 3,3.9 3,5V19A2,2 0 0,0 5,21H19A2,2 0 0,0 21,19V12H19V19Z" />
+</svg>