Merge pull request #86 from deeppavlov/dev

fix: Bring doc workflow to work (#85)

.github/workflows/build_and_publish_docs.yml

@@ -1,5 +1,4 @@
 name: build_and_publish_docs
-
 on:
   workflow_dispatch:
 
@@ -22,6 +21,14 @@ jobs:
         with:
           python-version: 3.9
 
+      - name: setup poetry
+        run: |
+          python -m pip install --upgrade pip poetry
+  
+      - name: install dependencies
+        run: poetry install
+        working-directory: backend
+
       - name: build documentation
         run: make build_docs