fix: fix CI tests

Author: brianmay

.github/workflows/docker.yml

@@ -10,8 +10,9 @@ jobs:
     name: Setup, Build, Test
     uses: brianmay/workflows/.github/workflows/elixir.yaml@main
     with:
-      apt_packages: "libimage-exiftool-perl ffmpeg exiftran libraw-bin"
+      apt_packages: "graphicsmagick-imagemagick-compat libimage-exiftool-perl ffmpeg exiftran libraw-bin"
       test_data: "https://www.dropbox.com/s/yg6jdk9lfewn8yf/penguin_memories.tar?dl=0"
+      test_sha256: "1be2094961977dc393b7312b8799259b2026b4570c4591bc6759dbfbfb0fe146"
 
   push:
     name: Push