feature: full-spectrum runtime Docker configuration (via #4965)

* reorganize docker things

* Configurator WIP

* implement Docker runtime config generator

* add tests

* update documentation

* fix Markdown tables

* Move Docker section

* add note to README

* move up `nodejs` install for more aggressive caching

* drop exclusive test

* fix missing `DISPLAY_OPERATION_ID`

docker/configurator/index.js

@@ -0,0 +1,40 @@
+const fs = require("fs")
+const path = require("path")
+
+const translator = require("./translator")
+const configSchema = require("./variables")
+
+const START_MARKER = "// Begin Swagger UI call region"
+const END_MARKER = "// End Swagger UI call region"
+
+const targetPath = path.normalize(process.cwd() + "/" + process.argv[2])
+
+const originalHtmlContent = fs.readFileSync(targetPath, "utf8")
+
+const startMarkerIndex = originalHtmlContent.indexOf(START_MARKER)
+const endMarkerIndex = originalHtmlContent.indexOf(END_MARKER)
+
+const beforeStartMarkerContent = originalHtmlContent.slice(0, startMarkerIndex)
+const afterEndMarkerContent = originalHtmlContent.slice(endMarkerIndex + END_MARKER.length)
+
+fs.writeFileSync(targetPath, `${beforeStartMarkerContent}
+      ${START_MARKER}
+      const ui = SwaggerUIBundle({
+        ${indent(translator(process.env, { injectBaseConfig: true }), 8, 2)}
+      })
+      ${END_MARKER}
+${afterEndMarkerContent}`)
+
+function indent(str, len, fromLine) {
+
+  return str
+    .split("\n")
+    .map((line, i) => {
+      if(i + 1 >= fromLine) {
+        return `${Array(len + 1).join(" ")}${line}`
+      } else {
+        return line
+      }
+    })
+    .join("\n")
+}