Skip the faulting gif file.

Author: pawchen

.github/workflows/optimize.yml

@@ -15,7 +15,7 @@ jobs:
 
       - name: Install tools
         run: |
-          sudo apt-get install -y webp imagemagick minify parallel
+          sudo apt-get install -y webp minify parallel
 
       - name: Optimize still images
         run: >
@@ -25,7 +25,7 @@ jobs:
       - name: Optimize gif images
         run: >
           find pages/ -iname "*.gif" -print0
-          | parallel -0 'mogrify -coalesce -format webp -define webp:lossless=true {} && rm {}'
+          | parallel -0 'gif2webp -lossless -q 100 {} -o {.}.webp && rm {} || echo "::warning::Skipped optimizing {}"'
 
       - name: Optimize text
         run: |