feat: add dockerfile tooltips

Signed-off-by: David Karlsson <35727626+dvdksn@users.noreply.github.com>

assets/js/src/tooltip.js

@@ -0,0 +1,12 @@
+const cmds = document.querySelectorAll(".language-dockerfile span.k");
+
+for (const cmd of cmds) {
+  const name = cmd.textContent;
+  const a = document.createElement("a")
+  a.classList.add("underline","underline-offset-4","decoration-dashed","cursor-pointer")
+  a.title = `Learn more about the ${name} instruction`
+  a.href = `/engine/reference/builder/#${name.toLowerCase()}`
+  a.innerHTML = cmd.outerHTML
+  cmd.insertAdjacentElement("beforebegin", a)
+  cmd.remove()
+}

tailwind.config.js

@@ -1,6 +1,6 @@
 /** @type {import('tailwindcss').Config} */
 module.exports = {
-  content: ["./hugo_stats.json","./layouts/**/*.{html,js}", "./content/**/*.md"],
+  content: ["./hugo_stats.json","./layouts/**/*.{html,js}", "./content/**/*.md", "assets/js/**/*.js"],
   darkMode: "class",
   theme: {
     extend: {