Add reusable scripts for docker build and palcloud deploy

.github/workflows/docker-build.yml

@@ -0,0 +1,20 @@
+on:
+  workflow_call:
+    secrets:
+      DOCKER_USERNAME:
+        required: true
+      DOCKER_PASSWORD:
+        required: true
+
+jobs:
+  build-docker-container:
+    runs-on: ubuntu-latest
+    container: docker.io/palkerecs/kaniko:alpine
+    steps:
+      - uses: actions/checkout@v3
+      - run: apk add skopeo
+        name: Instal authentication helper
+      - run: skopeo login --compat-auth-file /kaniko/.docker/config.json -u ${{ secrets.DOCKER_USERNAME }} -p ${{ secrets.DOCKER_PASSWORD }} gitea.palk.me
+        name: Login to container registry
+      - run: /kaniko/executor --context "${{ github.workspace }}" --dockerfile "${{ github.workspace }}/Dockerfile" --destination "gitea.palk.me/${{ github.repository }}:${{ github.sha }}" --cache=true
+        name: Build and publish container

.github/workflows/palcloud-deploy.yml

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+on:
+  workflow_call:
+    inputs:
+      deployment-file:
+        type: string
+        default: k8s/deployment.yaml
+    secrets:
+      PALTIVERSE_K8S:
+        required: true
+      TAILSCALE_TOKEN:
+        required: true
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    container: alpine:3
+    steps:
+      - run: apk add tailscale kubectl bash curl envsubst nodejs npm git
+        name: Install dependencies
+
+      - uses: actions/checkout@v3
+
+      - name: Create kube directory
+        run: mkdir /opt/kube
+      - name: Bootstrap kubeconfig
+        run: echo "$PALTIVERSE_K8S" | base64 -d > /opt/kube/config
+        env:
+          PALTIVERSE_K8S: ${{ secrets.PALTIVERSE_K8S }}
+      - name: Add tailscale proxy to kubeconfig
+        run: kubectl config set clusters.default.proxy-url http://localhost:1055
+        env:
+          KUBECONFIG: /opt/kube/config
+
+      - name: Configure tailscale
+        run: tailscaled --tun=userspace-networking --socks5-server=localhost:1055 --outbound-http-proxy-listen=localhost:1055 & tailscale up --authkey="${{ secrets.TAILSCALE_TOKEN }}" --advertise-tags=tag:gitea-runners
+
+      - name: Run kubectl
+        run: envsubst < ${{ inputs.deployment-file }} | kubectl apply -f -
+        env:
+          KUBECONFIG: /opt/kube/config
+          CI_COMMIT_SHA: ${{ github.sha }}