diff --git a/.cline-context.md b/.cline-context.md
index 9f1ff90..4681d44 100644
--- a/.cline-context.md
+++ b/.cline-context.md
@@ -24,7 +24,10 @@
   - Added Export modal in Sidebar user popover menu supporting format selection, target list filtering, completed tasks inclusion toggle, and seamless Demo mode client-side Blob generation.
   - Added localized i18n strings for Export across English, Korean, and Japanese.
   - Migrated repository and commit history to self-hosted Gitea remote origin.
-  - Configured production multi-stage `Dockerfile` and automated Gitea Actions CI workflow (`.gitea/workflows/docker-build.yaml`) for building & pushing container images to Gitea Container Registry.
+  - Configured production multi-stage `Dockerfile` with standalone Next.js runner, Prisma CLI migrations support, and automated `docker-entrypoint.sh` startup script.
+  - Added `.dockerignore` for minimal context transfer and fast build times.
+  - Refined `docker-compose.yml` and `.env.example` to support prebuilt registry images (`CHECKFLOW_IMAGE`) and automated database migrations.
+  - Automated Gitea Actions CI workflow (`.gitea/workflows/docker-build.yaml`) for building & pushing container images to Gitea Container Registry.
   - Validated that `npm run lint` and `npm run build` execute with 0 errors and 0 warnings.
 
 - **Next Steps (Todo):**
diff --git a/.dockerignore b/.dockerignore
new file mode 100644
index 0000000..2737492
--- /dev/null
+++ b/.dockerignore
@@ -0,0 +1,35 @@
+# Dependencies & Build Output
+node_modules
+.next
+out
+
+# Git & Version Control
+.git
+.gitignore
+
+# Environment & Secret Files
+.env
+.env*.local
+*.pem
+
+# Log Files
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# AI & Editor Contexts
+.clinecontext
+.cline-context.md
+.clinerules
+src/.clinerules
+CLAUDE.md
+
+# Documentation & CI Workflows (not needed inside container image)
+.gitea
+docker-compose*.yml
+
+# Local Dev DBs
+prisma/dev
+prisma/*.db
+prisma/*.db-journal
diff --git a/.env.example b/.env.example
index af25751..ccd331f 100644
--- a/.env.example
+++ b/.env.example
@@ -8,4 +8,7 @@ NEXTAUTH_URL=http://localhost:3000
 NEXTAUTH_SECRET=change-this-to-a-random-string
 
 # Port to expose (default 3000)
-PORT=3000
\ No newline at end of file
+PORT=3000
+
+# Container Registry Image (Optional, default: checkflow:latest)
+# CHECKFLOW_IMAGE=gitea.example.com/username/checkflow:latest
diff --git a/Dockerfile b/Dockerfile
index 5ed4559..6d37cb7 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -22,16 +22,23 @@ ENV NEXT_TELEMETRY_DISABLED=1
 
 RUN addgroup --system --gid 1001 nodejs && adduser --system --uid 1001 nextjs
 
+# Copy runtime assets and standalone build
 COPY --from=builder --chown=nextjs:nodejs /app/public ./public
 COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
 COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static
 COPY --from=builder --chown=nextjs:nodejs /app/prisma ./prisma
 COPY --from=builder --chown=nextjs:nodejs /app/node_modules/.prisma ./node_modules/.prisma
 COPY --from=builder --chown=nextjs:nodejs /app/node_modules/@prisma ./node_modules/@prisma
+COPY --from=builder --chown=nextjs:nodejs /app/node_modules/prisma ./node_modules/prisma
+COPY --from=builder --chown=nextjs:nodejs /app/package.json ./package.json
+
+COPY --chown=nextjs:nodejs docker-entrypoint.sh ./docker-entrypoint.sh
+RUN chmod +x ./docker-entrypoint.sh
 
 USER nextjs
 EXPOSE 3000
 ENV PORT=3000
 ENV HOSTNAME="0.0.0.0"
 
+ENTRYPOINT ["./docker-entrypoint.sh"]
 CMD ["node", "server.js"]
diff --git a/docker-compose.yml b/docker-compose.yml
index 0cc4a26..3208bf8 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -17,24 +17,16 @@ services:
       timeout: 5s
       retries: 5
 
-  migrate:
-    build: .
-    container_name: checkflow-migrate
-    depends_on:
-      postgres:
-        condition: service_healthy
-    environment:
-      DATABASE_URL: postgresql://checkflow:${POSTGRES_PASSWORD:-changeme}@postgres:5432/checkflow
-    command: npx prisma migrate deploy
-    restart: "no"
-
   app:
-    build: .
+    image: ${CHECKFLOW_IMAGE:-checkflow:latest}
+    build:
+      context: .
+      dockerfile: Dockerfile
     container_name: checkflow-app
     restart: unless-stopped
     depends_on:
-      migrate:
-        condition: service_completed_successfully
+      postgres:
+        condition: service_healthy
     ports:
       - "${PORT:-3000}:3000"
     environment:
@@ -46,4 +38,4 @@ services:
       - ./prisma:/app/prisma
 
 volumes:
-  postgres_data:
\ No newline at end of file
+  postgres_data:
diff --git a/docker-entrypoint.sh b/docker-entrypoint.sh
new file mode 100644
index 0000000..27bc840
--- /dev/null
+++ b/docker-entrypoint.sh
@@ -0,0 +1,12 @@
+#!/bin/sh
+set -e
+
+# Run Prisma database migrations if DATABASE_URL is set and not explicitly skipped
+if [ -n "$DATABASE_URL" ] && [ "$SKIP_DB_MIGRATE" != "true" ]; then
+  echo "[CheckFlow] Checking and applying database migrations..."
+  if [ -f "./node_modules/prisma/build/index.js" ]; then
+    node ./node_modules/prisma/build/index.js migrate deploy --schema=./prisma/schema.prisma || echo "[CheckFlow] Warning: Prisma migration step skipped or encountered non-fatal error."
+  fi
+fi
+
+exec "$@"