[CI] Use -execdir to run pdflatex from the same dir and exit from 'find' on error

Author: aobolensk

.github/workflows/build.yml

@@ -20,7 +20,7 @@ jobs:
         sudo apt-get install texlive*
     - name: Build
       run: |
-        find . -iname '*.tex' -exec sh -c 'cd $(echo {}|cut -d"/" -f2) && pdflatex -output-directory $GITHUB_WORKSPACE $GITHUB_WORKSPACE/{}' \;
+        find . -iname '*.tex' -execdir pdflatex -output-directory $GITHUB_WORKSPACE {} \; || exit 1
     - uses: actions/upload-artifact@v4
       with:
         name: pdf-linux
@@ -39,7 +39,7 @@ jobs:
     - name: Build
       run: |
         eval "$(/usr/libexec/path_helper)"
-        find . -iname '*.tex' -exec sh -c 'cd $(echo {}|cut -d"/" -f2) && pdflatex -output-directory $GITHUB_WORKSPACE $GITHUB_WORKSPACE/{}' \;
+        find . -iname '*.tex' -execdir pdflatex -output-directory $GITHUB_WORKSPACE {} \; || exit 1
     - uses: actions/upload-artifact@v4
       with:
         name: pdf-macos