ci: added a github action to run checks against backend

.github/workflows/ci.yml

@@ -0,0 +1,33 @@
+   name: ci-checks
+
+   on:
+     push:
+       branches: [ main ]
+     pull_request:
+       branches: [ main ]
+
+   jobs:
+    build:
+      runs-on: ubuntu-latest
+      steps:
+      - name: checkout repo
+        uses: actions/checkout@v2
+
+      - name: Setup Python Version
+        uses: actions/setup-python@v2
+        with:
+          python-version: 3.9
+
+      - name: Install Poetry Action
+        working-directory: backend
+        uses: snok/install-poetry@v1
+        with:
+          version: 1.1.13
+          virtualenvs-create: true
+          virtualenvs-in-project: true
+          virtualenvs-path: .venv
+          installer-parallel: true
+
+      - name: run checks
+        working-directory: backend
+        run: make all

backend/makefile

@@ -1,15 +1,15 @@
 
 lint:
-	flake8
+	poetry run flake8
 
 typecheck:
-	mypy .
+	poetry run mypy .
 
 coverage:
-	coverage run -m pytest
-	coverage report
+	poetry run coverage run -m pytest
+	poetry run coverage report
 
 install:
 	poetry install
 
-all: install lint typecheck coverage
+all: install lint typecheck coverage