fix: set container image for k8s runner to provide node/python

.gitea/workflows/homelab-main.yml

@@ -9,12 +9,17 @@ name: Homelab Main
 jobs:
   validate:
     runs-on: k8s
+    container: 
+      image: node:18-bullseye
 
     steps:
       - name: Check out repository
         uses: actions/checkout@v4
         with:
           ref: ${{ gitea.sha }}
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ gitea.sha }}
       - name: Validate repository
         run: |
           set -euo pipefail
@@ -23,6 +28,8 @@ jobs:
 
   deploy:
     runs-on: k8s
+    container: 
+      image: node:18-bullseye
     needs:
       - validate
     if: ${{ gitea.ref == 'refs/heads/main' }}
@@ -32,6 +39,9 @@ jobs:
         uses: actions/checkout@v4
         with:
           ref: ${{ gitea.sha }}
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ gitea.sha }}
       - name: Block automatic deploy for external Gitea changes
         run: |
           set -euo pipefail