add containerFiles

Containerfile.migrator

@@ -0,0 +1,21 @@
+# Stage 1: Install dependencies
+FROM docker.io/oven/bun:1.3.3-alpine AS deps
+WORKDIR /app
+COPY package.json bun.lock ./
+
+RUN apk add --no-cache python3 make g++
+
+RUN bun i --frozen-lockfile
+
+# Stage 2: Build the SvelteKit application
+FROM docker.io/oven/bun:1.3.3-alpine AS builder
+WORKDIR /app
+
+ARG DATABASE_URL
+ENV DATABASE_URL=$DATABASE_URL
+
+COPY --from=deps /app/node_modules ./node_modules
+COPY . .
+
+CMD ["bun", "--bun", "run", "db:migrate"]
+