fix CI: add textual to lint, run docker-build on runner host

.gitea/workflows/ci.yml

@@ -23,6 +23,7 @@ jobs:
           python3 -m pip install --upgrade pip
           pip3 install ruff mypy
           pip3 install -e ".[dev]"
+          pip3 install textual
 
       - name: Run ruff
         run: ruff check .
@@ -53,8 +54,6 @@ jobs:
 
   docker-build:
     runs-on: ubuntu-latest
-    container:
-      image: gitea-job-image
     steps:
       - name: Clone repo
         run: |