ci: add end-to-end tests

Signed-off-by: Evan Wies <evan@neomantra.net>

Author: neomantra

tests/e2e/local-test.yml

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+name: Local E2E Test
+
+on: 
+  workflow_dispatch:
+
+env:
+  GHCR_IMAGE: localhost:5001/neomantra/openresty
+  DOCKERHUB_IMAGE: localhost:5002/openresty/openresty
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - flavor: alpine-apk-test
+            arch: amd64
+            dockerfile: alpine-apk/Dockerfile
+            platforms: linux/amd64
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      # Configure Buildx to allow insecure registries for localhost
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+        with:
+          driver-opts: network=host
+          buildkitd-flags: --allow-insecure-entitlement security.insecure --allow-insecure-entitlement network.host
+
+      - name: Extract metadata
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.GHCR_IMAGE }}
+          tags: |
+            type=raw,value=${{ matrix.flavor }}-${{ matrix.arch }}
+
+      - name: Build and push
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          file: ${{ matrix.dockerfile }}
+          platforms: ${{ matrix.platforms }}
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+
+      - name: Tag and Push to Mirror
+        run: |
+          for TAG in ${{ steps.meta.outputs.tags }}; do
+            # Replace port 5001 with 5002 for the mirror
+            DOCKERHUB_TAG=$(echo "$TAG" | sed "s|5001|5002|")
+            docker buildx imagetools create -t "$DOCKERHUB_TAG" "$TAG"
+          done

tests/e2e/run-test.sh

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+#!/bin/bash
+set -e
+
+# Ensure registries are running
+if ! docker ps | grep -q openresty-test-ghcr; then
+    echo "Starting registries..."
+    ./tests/e2e/start-registries.sh
+fi
+
+echo "Running E2E test with act..."
+# We use --network host to allow the buildx container to reach localhost registries
+# We specify the workflow file explicitly
+act workflow_dispatch \
+    -W tests/e2e/local-test.yml \
+    --container-architecture linux/amd64 \
+    --bind \
+    --network host
+
+echo "Test complete. Verifying images..."
+docker pull localhost:5001/neomantra/openresty:alpine-apk-test-amd64
+docker pull localhost:5002/openresty/openresty:alpine-apk-test-amd64
+
+echo "✅ verification successful!"

tests/e2e/start-registries.sh

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+#!/bin/bash
+set -e
+
+# Start GHCR mock
+docker run -d -p 5001:5000 --restart=always --name openresty-test-ghcr registry:2
+echo "Started openresty-test-ghcr on port 5001"
+
+# Start Docker Hub mock
+docker run -d -p 5002:5000 --restart=always --name openresty-test-hub registry:2
+echo "Started openresty-test-hub on port 5002"
+
+echo "Registries are running."