Enhance deployment workflows and Dockerfile

- Add Docker feature for running Docker outside of Docker in devcontainer.json
- Update pod status checks in k3d, kind, and microk8s workflows to target 'hub-frontend' instead of 'kerberos-hub'
- Improve Dockerfile to install 'kind' based on architecture

Dockerfile

@@ -1,8 +1,19 @@
 FROM ubuntu:latest
 LABEL maintainer="Cedric Verstraeten"
 
-# Install dependencies
-RUN apt-get update && apt-get install snapd snap-confine -y
+# Install curl
+RUN apt-get update && apt-get install -y curl
 
-# Install microk8s
-RUN snap install microk8s --classic --channel=1.32/stable
+# Install kind (detect architecture)
+RUN ARCH=$(uname -m) && \
+    if [ "$ARCH" = "x86_64" ]; then \
+        curl -Lo /usr/local/bin/kind https://kind.sigs.k8s.io/dl/v0.28.0/kind-linux-amd64; \
+    elif [ "$ARCH" = "aarch64" ]; then \
+        curl -Lo /usr/local/bin/kind https://kind.sigs.k8s.io/dl/v0.28.0/kind-linux-arm64; \
+    else \
+        echo "Unsupported architecture: $ARCH" && exit 1; \
+    fi && \
+    chmod +x /usr/local/bin/kind
+
+# Create a cluster using kind
+RUN kind create cluster