Use svgstat instead of magick for svg file analysis

docker/app/Dockerfile

@@ -12,6 +12,7 @@ RUN git clone https://github.com/philomena-dev/cli_intensities /tmp/cli_intensit
 
 ADD https://api.github.com/repos/philomena-dev/mediatools/git/refs/heads/master /tmp/mediatools_version.json
 RUN git clone https://github.com/philomena-dev/mediatools /tmp/mediatools \
+    && ln -s /usr/lib/librsvg-2.so.2 /usr/lib/librsvg-2.so \
     && cd /tmp/mediatools \
     && make -j$(nproc) install
 

lib/philomena/analyzers/svg.ex

@@ -12,9 +12,9 @@ defmodule Philomena.Analyzers.Svg do
   end
 
   defp stats(file) do
-    case System.cmd("identify", ["-format", "%W %H\n", file]) do
+    case System.cmd("svgstat", [file]) do
       {output, 0} ->
-        [width, height] =
+        [_size, _frames, width, height, _num, _den] =
           output
           |> String.trim()
           |> String.split(" ")