Fix the deploy stage of our build pipeline

I've fixed the deploy stage of our build pipeline, as it got mixed in
with the old workflow file due to a merge conflict. The deploy stage is
currently split into a separate workflow; theoretically, this allows us
to trigger a redeploy from GitHub, without having to build the container
image again.

Signed-off-by: Sebastiaan Zeeff <[email protected]>

.github/workflows/deploy.yml

@@ -0,0 +1,30 @@
+name: Deploy
+
+on:
+  workflow_run:
+    workflows: ["Build"]
+    branches:
+      - master
+    types:
+      - completed
+
+jobs:
+  build:
+    if: github.event.workflow_run.conclusion == 'success'
+    name: Build & Push
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Authenticate with Kubernetes
+        uses: azure/k8s-set-context@v1
+        with:
+          method: kubeconfig
+          kubeconfig: ${{ secrets.KUBECONFIG }}
+
+      - name: Deploy to Kubernetes
+        uses: Azure/k8s-deploy@v1
+        with:
+          manifests: |
+              deployment.yaml
+          images: 'ghcr.io/python-discord/bot:${{ steps.sha_tag.outputs.tag }}'
+          kubectl-version: 'latest'

README.md

@@ -1,8 +1,9 @@
 # Python Utility Bot
 
-[![Discord](https://img.shields.io/static/v1?label=Python%20Discord&logo=discord&message=%3E100k%20members&color=%237289DA&logoColor=white)](https://discord.gg/2B963hn)
+[![Discord][7]][8]
 [![Lint & Test][1]][2]
 [![Build][3]][4]
+[![Deploy][5]][6]
 [![Coverage Status](https://coveralls.io/repos/github/python-discord/bot/badge.svg)](https://coveralls.io/github/python-discord/bot)
 [![License](https://img.shields.io/github/license/python-discord/bot)](LICENSE)
 [![Website](https://img.shields.io/badge/website-visit-brightgreen)](https://pythondiscord.com)
@@ -16,3 +17,7 @@ Read the [Contributing Guide](https://pythondiscord.com/pages/contributing/bot/)
 [2]: https://github.com/python-discord/bot/actions?query=workflow%3A%22Lint+%26+Test%22+branch%3Amaster
 [3]: https://github.com/python-discord/bot/workflows/Build/badge.svg?branch=master
 [4]: https://github.com/python-discord/bot/actions?query=workflow%3ABuild+branch%3Amaster
+[5]: https://github.com/python-discord/bot/workflows/Deploy/badge.svg?branch=master
+[6]: https://github.com/python-discord/bot/actions?query=workflow%3ADeploy+branch%3Amaster
+[7]: https://img.shields.io/static/v1?label=Python%20Discord&logo=discord&message=%3E100k%20members&color=%237289DA&logoColor=white
+[8]: https://discord.gg/2B963hn