fix: move paint Dockerfile into kit directory

Moved Dockerfile from paint/ to kit/ directory and updated
build context to use local directory instead of ../paint.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

kit/Dockerfile

@@ -0,0 +1,23 @@
+# Build miniPaint from GitHub repository
+FROM node:18-alpine AS builder
+
+WORKDIR /app
+
+# Clone the repository
+RUN apk add --no-cache git && \
+    git clone https://github.com/viliusle/miniPaint.git . && \
+    npm install && \
+    npm run build
+
+# Production stage with nginx
+FROM nginx:alpine
+
+# Copy built files from builder
+COPY --from=builder /app/dist /usr/share/nginx/html
+
+# Copy nginx configuration if needed
+COPY --from=builder /app /usr/share/nginx/html
+
+EXPOSE 80
+
+CMD ["nginx", "-g", "daemon off;"]

kit/compose.yaml

@@ -33,7 +33,7 @@ services:
 
   paint:
     build:
-      context: ../paint
+      context: .
       dockerfile: Dockerfile
     image: minipaint:latest
     container_name: ${KIT_COMPOSE_PROJECT_NAME}_paint