Merge pull request DataDog#6848 from DataDog/zach/use-imgix

WEB-12 Use Imgix for Docs Images.

Author: Pierre Guceski

layouts/shortcodes/img.html

@@ -1,3 +1,6 @@
+{{ if not (.Get "src") }}
+ {{ errorf "Img shortcode error: Missing value for param 'src': %s" .Position }}
+{{ end }}
 {{- if eq (.Get "popup") "false" -}}
  {{- $.Scratch.Set "popup" "false" -}}
 {{- else -}}
@@ -8,10 +11,9 @@
 {{- $img_height := .Get "height" -}}
 {{- $wide := .Get "wide" -}}
 {{- $video := .Get "video" -}}
-{{- $local_ref := (.Get "src") -}}
-{{- $hash_ref := $local_ref -}}
-{{- $.Scratch.Add "_img" (print "images/" $hash_ref) -}}
-{{- $img := $.Scratch.Get "_img" -}}
+{{- $src := (.Get "src") -}}
+{{- $img := (print .Site.Params.img_url "images/" $src) -}}
+
 {{- $image_type_arr := split (.Get "src") "." -}}
 {{- $image_ext := index $image_type_arr 1 -}}
 {{- if $wide -}}
@@ -44,7 +46,7 @@
  playsinline
  autoplay
  loop >
- <source src="{{ print $img | relURL }}"
+ <source src="{{ (print "/images/" $src) | relURL }}"
  type="video/mp4"
  media="(min-width: 0px)" >
  <div class="play"></div>