add building pysymgym workflow

Author: Nigma-Ks

.github/workflows/build_docker.yml

@@ -0,0 +1,29 @@
+name: Test build pysymgym container and run tests
+
+on: [ push, pull_request ]
+
+jobs:
+  set-up-and-test-docker:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up Python 3.14
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.14'
+          cache: 'pip'
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install -r requirements.txt
+
+      - name: Build dockerfile and update dataset
+        run: |
+          python backend/launch_service/app_setup.py
+
+      - name: Run Python tests
+        run: |
+          python -m pytest backend/launch_service -v