Add Python CI workflow

.github/workflows/python-test.yml

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+# Copyright 2010 New Relic, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+---
+name: Test Python init container image
+
+on:
+  # Allow manual trigger.
+  workflow_dispatch: 
+  push:
+    # Run tests on push to main or PR. 
+    branches:
+      - main
+    pull_request:
+    # Do not run when a tag is created.
+    tags-ignore:
+      - "**"
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+      - name: Build
+        run: go build -o myapp .
+      - name: Docker Build and Push
+        uses: docker/build-push-action@v2
+        with:
+          context: .
+          push: true
+          tags: your-docker-registry/your-repo:latest
+concurrency:
+  group: ${{ github.ref || github.run_id }}
+  cancel-in-progress: true
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+      - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # 4.1.1
+        with:
+          persist-credentials: false
+          fetch-depth: 0
+
+      - name: Set up Docker Buildx
+        id: buildx
+        uses: docker/setup-buildx-action@d70bba72b1f3fd22344832f00baa16ece964efeb # 3.3.0
+
+      - name: Generate Docker metadata (tags and labels)
+        id: meta
+        uses: docker/metadata-action@8e5442c4ef9f78752691e2d8f8d19755c6f78e81 # 5.5.1
+        with:
+          images: ghcr.io/${{ github.repository }}-python
+          flavor: |
+            prefix=
+            suffix=
+            latest=false
+          tags: |
+            type=raw,value=latest,enable={{is_default_branch}}
+            type=schedule,pattern={{date 'YYYY-MM-DD'}}
+            type=sha,format=short,prefix=sha-
+            type=sha,format=long,prefix=sha-
+
+      - name: Login to GitHub Container Registry
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@e92390c5fb421da1463c202d546fed0ec5c39f20 # 3.1.0
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build and publish init container image
+        uses: docker/build-push-action@2cdde995de11925a030ce8070c3d77a52ffcf1c0 # 5.3.0
+        with:
+          push: ${{ github.event_name != 'pull_request' }}
+          context: .github/containers
+          platforms: ${{ (format('refs/heads/{0}', github.event.repository.default_branch) == github.ref) && 'linux/amd64,linux/arm64' || 'linux/amd64' }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+
+      - name: Build and publish test app image
+        uses: docker/build-push-action@2cdde995de11925a030ce8070c3d77a52ffcf1c0 # 5.3.0
+        with:
+          push: ${{ github.event_name != 'pull_request' }}
+          context: .github/containers
+          platforms: ${{ (format('refs/heads/{0}', github.event.repository.default_branch) == github.ref) && 'linux/amd64,linux/arm64' || 'linux/amd64' }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+
+      - name: Start minikube
+        uses: medyagh/setup-minikube@317d92317e473a10540357f1f4b2878b80ee7b95 # 0.0.16
+
+      - name: Build image
+        run: |
+          export SHELL=/bin/bash
+          minikube -p minikube docker-env
+          make build-image
+          echo -n "verifying images:"
+          docker images
+
+      - name: Deploy to minikube
+        run: |
+          kubectl apply -f deploy/deploy-minikube.yaml
+
+      # Wait 30 seconds for the cluster to start and then hit an application endpoint.
+      - name: Test service URLs
+        run: |
+          curl $(minikube service --wait 30 discover --url)/version
+          curl http://localhost:5000

python/tests/customresource.yaml

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+---
+apiVersion: newrelic.com/v1alpha1
+kind: Instrumentation
+metadata:
+  labels:
+    app.kubernetes.io/name: instrumentation
+    app.kubernetes.io/created-by: newrelic-agent-operator
+  name: newrelic-instrumentation
+spec:
+  python:
+    image: ghcr.io/${{ github.repository }}-python
+    env:
+      # Put the agent in developer mode so it doesn't try to connect to the real collector.
+      - name: NEW_RELIC_DEV_MODE
+        value: true

python/tests/flask.py

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+import newrelic.agent
+from flask import Flask
+
+app = Flask(__name__)
+
+@app.route("/")
+def hello_world():
+    transaction = newrelic.agent.current_transaction()
+    if not transaction:
+        flask.abort(417)
+    return "<p>Hello, World!</p>"

python/tests/python_test_app_deployment.yaml

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+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: flask-hello-world
+spec:
+  selector:
+    matchLabels:
+      app: flask-hello-world
+  replicas: 1
+  template:
+    metadata:
+      labels:
+        app: flask-hello-world
+      annotations:
+        instrumentation.newrelic.com/inject-python: "true"
+    spec:
+      containers:
+        - name: flask-hello-world
+          image: ghcr.io/anuraaga/flask-hello-world:latest
+          ports:
+            - containerPort: 5000
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: flask-hello-world-service
+spec:
+  type: ClusterIP
+  ports:
+  - port: 80
+    targetPort: 5000
+  selector:
+    app: flask-hello-world