📦 build: Add devcontainer for local Kubernetes development

.devcontainer/post-create.sh

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+#!/bin/bash
+set -e
+
+echo "=============================================="
+echo "  Minikura Development Environment Setup"
+echo "=============================================="
+
+# Start Docker
+echo "==> Starting Docker..."
+sudo service docker start
+sleep 2
+sudo chmod 666 /var/run/docker.sock
+
+# Install and start k3s via install script (sets up systemd service)
+echo "==> Installing k3s..."
+curl -sfL https://get.k3s.io | INSTALL_K3S_EXEC="--write-kubeconfig-mode 644 --disable traefik" sh -
+
+# Wait for k3s to be ready
+echo "==> Waiting for k3s..."
+sleep 5
+
+# Configure kubectl
+echo "==> Configuring kubectl..."
+mkdir -p /home/dev/.kube
+until [ -f /etc/rancher/k3s/k3s.yaml ]; do sleep 1; done
+sudo cp /etc/rancher/k3s/k3s.yaml /home/dev/.kube/config
+sudo chown dev:dev /home/dev/.kube/config
+
+# Wait for node
+echo "==> Waiting for node..."
+for i in {1..30}; do
+    kubectl get nodes 2>/dev/null | grep -q " Ready" && break
+    sleep 2
+done
+
+# Create namespace
+kubectl create namespace minikura --dry-run=client -o yaml | kubectl apply -f - 2>/dev/null || true
+
+# Install dependencies
+echo "==> Installing dependencies..."
+cd /workspace
+sudo rm -rf node_modules apps/*/node_modules packages/*/node_modules 2>/dev/null || true
+sudo chown -R dev:dev /workspace
+bun install
+
+# Setup database
+echo "==> Setting up database..."
+bun run db:generate
+bun run db:push
+
+echo ""
+echo "=============================================="
+echo "  Ready! Commands:"
+echo "    bun run dev      - Start backend + web"
+echo "    bun run k8s:dev  - Start K8s operator"
+echo "    kubectl get nodes"
+echo "=============================================="