Add CI

.github/workflows/ci.yml

@@ -0,0 +1,38 @@
+name: CI
+
+on: [push]
+
+jobs:
+  lint_backend:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Lint backend code
+        run: ./scripts/lint_backend.sh
+
+  lint_etl:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Lint ETL code
+        run: ./scripts/lint_etl.sh
+
+  lint_frontend:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Lint frontend code
+        run: ./scripts/lint_frontend.sh
+
+  test_backend:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Start database services
+        run: docker compose up -d database redis
+      - name: Wait for database startup to finish
+        uses: jakejarvis/wait-action@master
+        with:
+          time: '10s'
+      - name: Run backend tests
+        run: ./scripts/test_backend.sh