add a test flow to check this all works

Author: nicktrn

.github/workflows/testcontainers.yml

@@ -0,0 +1,77 @@
+name: "🐳 Testcontainers"
+
+on:
+  workflow_call:
+  workflow_dispatch:
+  push:
+
+jobs:
+  unitTests:
+    name: "🧪 Unit Tests (run ${{ matrix.run }})"
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        run: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20]
+    steps:
+      - name: 🔧 Configure docker address pool
+        run: |
+          CONFIG='{
+            "default-address-pools" : [
+              {
+                "base" : "172.17.0.0/12",
+                "size" : 20
+              },
+              {
+                "base" : "192.168.0.0/16",
+                "size" : 24
+              }
+            ]
+          }'
+          mkdir -p /etc/docker
+          echo "$CONFIG" | sudo tee /etc/docker/daemon.json
+          sudo systemctl restart docker
+
+      - name: ⬇️ Checkout repo
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: ⎔ Setup pnpm
+        uses: pnpm/action-setup@v4
+        with:
+          version: 8.15.5
+
+      - name: ⎔ Setup node
+        uses: buildjet/setup-node@v4
+        with:
+          node-version: 20.11.1
+          cache: "pnpm"
+
+      # ..to avoid rate limits when pulling images
+      - name: 🐳 Login to DockerHub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: 📥 Download deps
+        run: pnpm install --frozen-lockfile
+
+      - name: 📀 Generate Prisma Client
+        run: pnpm run generate
+
+      - name: 🧪 Run Webapp Unit Tests
+        run: pnpm run test:webapp
+        env:
+          DATABASE_URL: postgresql://postgres:postgres@localhost:5432/postgres
+          DIRECT_URL: postgresql://postgres:postgres@localhost:5432/postgres
+          SESSION_SECRET: "secret"
+          MAGIC_LINK_SECRET: "secret"
+          ENCRYPTION_KEY: "secret"
+      
+      - name: 🧪 Run Package Unit Tests
+        run: pnpm run test:packages
+      
+      - name: 🧪 Run Internal Unit Tests
+        run: pnpm run test:internal