feat: implement Docker support with entrypoint script and environment configuration for data directory

docker/entrypoint.sh

@@ -0,0 +1,29 @@
+#!/bin/sh
+set -eu
+
+DATA_DIR="${DATA_DIR:-/data}"
+SCHEMA_PATH="./prisma/schema.prisma"
+
+# ensure data dir exists and is writable
+mkdir -p "$DATA_DIR"
+chmod 0775 "$DATA_DIR" || true
+
+# ensure DATABASE_URL is set to the runtime DATA_DIR
+: "${DATABASE_URL:=file:${DATA_DIR}/sqlite.db}"
+export DATABASE_URL
+
+# create sqlite file if missing
+SQLITE_DB_PATH="${DATA_DIR}/sqlite.db"
+if [ ! -f "$SQLITE_DB_PATH" ]; then
+  touch "$SQLITE_DB_PATH"
+  chmod 0664 "$SQLITE_DB_PATH" || true
+fi
+
+# run non-interactive migrations if CLI available
+if command -v npx >/dev/null 2>&1 && [ -f "$SCHEMA_PATH" ]; then
+  echo "Running prisma migrate deploy..."
+  npx prisma migrate deploy --schema="$SCHEMA_PATH" || echo "prisma migrate deploy failed or no migrations to apply"
+fi
+
+# exec main process
+exec "$@"