Use a job for dive

.github/workflows/ci.yaml

@@ -137,12 +137,52 @@ jobs:
             FFMPEG_DATE=${{ env.FFMPEG_DATE }}
             FFMPEG_VERSION=${{ env.FFMPEG_VERSION }}
             YTDLP_DATE=${{ fromJSON(needs.info.outputs.ytdlp-latest-release).tag.name }}
+  dive:
+    runs-on: ubuntu-latest
+    needs: ['info', 'test']
+    steps:
+      - name: Set environment variables with jq
+        run: |
+          cat >| .ffmpeg.releases.json <<'EOF'
+          ${{ needs.info.outputs.ffmpeg-releases }}
+          EOF
+          mk_delim() { local f='%s_EOF_%d_' ; printf -- "${f}" "$1" "${RANDOM}" ; } ;
+          open_ml_var() { local f=''\%'s<<'\%'s\n' ; printf -- "${f}" "$2" "$1" ; } ;
+          close_ml_var() { local f='%s\n' ; printf -- "${f}" "$1" ; } ;
+          {
+            var='FFMPEG_DATE' ;
+            delim="$(mk_delim "${var}")" ;
+            open_ml_var "${delim}" "${var}" ;
+            jq_arg='[foreach .[] as $release ([{}, []]; [ .[0] + {($release.commit): ([ $release.date ] + (.[0][($release.commit)] // []) ) }, [ .[1][0] // $release.commit ] ] ; .[0][(.[1][0])] ) ][-1][0]' ;
+            jq -r "${jq_arg}" -- .ffmpeg.releases.json ;
+            close_ml_var "${delim}" "${var}" ;
+
+            ffmpeg_date="$( jq -r "${jq_arg}" -- .ffmpeg.releases.json )"
+            
+            var='FFMPEG_VERSION' ;
+            delim="$(mk_delim "${var}")" ;
+            open_ml_var "${delim}" "${var}" ;
+            jq_arg='.[]|select(.date == $date)|.versions[]|select(startswith("N-"))' ;
+            jq -r --arg date "${ffmpeg_date}" "${jq_arg}" -- .ffmpeg.releases.json ;
+            close_ml_var "${delim}" "${var}" ;
+            unset -v delim jq_arg var ;
+          } >> "${GITHUB_ENV}"
+          cat -v "${GITHUB_ENV}"
+          rm -v -f .ffmpeg.releases.json
+      - uses: actions/checkout@v4
       - name: Analysis with `dive`
         run: |
+          docker buildx build \
+            --build-arg IMAGE_NAME=${{ env.IMAGE_NAME }} \
+            --build-arg FFMPEG_DATE=${{ env.FFMPEG_DATE }} \
+            --build-arg FFMPEG_VERSION=${{ env.FFMPEG_VERSION }} }
+            --build-arg YTDLP_DATE=${{ fromJSON(needs.info.outputs.ytdlp-latest-release).tag.name }} \
+            --cache-from type=gha --load \
+            -t ${{ env.IMAGE_NAME }} .
           docker run --rm \
             -v /var/run/docker.sock:/var/run/docker.sock \
             ghcr.io/wagoodman/dive \
-            build -t ${{ env.IMAGE_NAME }} . \
+            '${{ env.IMAGE_NAME }}' \
             --ci \
             --highestUserWastedPercent '0.03' \
             --highestWastedBytes '10M'