Sync citation file

.github/workflows/citation.yaml

@@ -11,26 +11,20 @@ jobs:
   sync:
     runs-on: ubuntu-latest
     steps:
-
-      #- name: Checkout repo
-      #  uses: actions/checkout@v2
-      #  with:
-      #    repository: bioexcel/biobb_analysis
-      #    path: ./
+      - name: Checkout repo
+        uses: actions/checkout@v2
+        with:
+          repository: bioexcel/biobb_analysis
+          path: ./
 
       - name: Download file using wget
         run: wget -O ./CITATION.cff https://raw.githubusercontent.com/bioexcel/biobb/master/CITATION.cff
 
       - name: Check if file has changed
-        run: pwd
-
-      - name: Check if file has changed
-        run: ls -la ../
+        run: ls -la ./
 
-      #- name: Commit and push changes
-      #  run: |
-      #    git config --global user.name 'github-actions[bot]'
-      #    git config --global user.email 'github-actions[bot]@users.noreply.github.com'
-      #    git add .
-      #    git commit -m 'Sync citation file from biobb repo'
-      #    git push
+      - name: Commit and push changes if file has changed
+        run: |
+          git config --global user.name 'github-actions[bot]'
+          git config --global user.email 'github-actions[bot]@users.noreply.github.com'
+          git diff --exit-code CITATION.cff || (git add CITATION.cff && git commit -m "Updated CITATION.cff" && git push)