ci: switch from Kubernetes to Podman for local deployment

- Update Dockerfile to use fully qualified composer image name
- Replace kubectl commands with podman kube play/down in Makefile
- Change from Kubernetes Secret to ConfigMap for environment variables
- Set imagePullPolicy to Never and use localhost/ prefix for local images
- Reduce replica count to 1 for local development
- Add stop target to Makefile for easier cleanup

k8s/deployment.yaml

@@ -5,7 +5,7 @@ metadata:
   labels:
     app: mkm-admin
 spec:
-  replicas: 3
+  replicas: 1
   selector:
     matchLabels:
       app: mkm-admin
@@ -16,13 +16,13 @@ spec:
     spec:
       containers:
       - name: mkm-admin
-        image: mkm-admin:latest
-        imagePullPolicy: Always
+        image: localhost/mkm-admin:latest
+        imagePullPolicy: Never
         ports:
         - containerPort: 8000
         envFrom:
-        - secretRef:
-            name: mkm-admin-env
+        - configMapRef:
+            name: mkm-admin-config
         resources:
           requests:
             cpu: "100m"
@@ -52,12 +52,12 @@ spec:
     spec:
       containers:
       - name: worker
-        image: mkm-admin:latest
-        imagePullPolicy: Always
+        image: localhost/mkm-admin:latest
+        imagePullPolicy: Never
         command: ["php", "artisan", "horizon"]
         envFrom:
-        - secretRef:
-            name: mkm-admin-env
+        - configMapRef:
+            name: mkm-admin-config
         resources:
           requests:
             cpu: "100m"