add dockerfile

Dockerfile

@@ -0,0 +1,32 @@
+# Dockerfile for a Bun + Hono + SQLite application
+
+# --- Base Image ---
+FROM oven/bun:1-alpine
+
+# --- Environment Variables ---
+ENV NODE_ENV=production
+
+# --- Working Directory ---
+WORKDIR /app
+
+# --- Copy package.json and bun.lockb to leverage Docker cache ---
+COPY package.json bun.lockb ./
+
+# --- Install Dependencies ---
+# Do not install devDependencies to keep the image small
+RUN bun install --frozen-lockfile --production
+
+# --- Copy application source code ---
+COPY . .
+
+# --- Create dedicated directory for SQLite database ---
+# Declare a VOLUME for the database directory so data persists after container restarts.
+RUN mkdir -p /app/data
+VOLUME /app/data
+
+# --- Expose Port ---
+EXPOSE 3000
+
+# --- Command to run the application ---
+# Ensure the Hono app listens on 0.0.0.0
+CMD ["bun", "run", "src/index.ts"]