diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..c327b4a
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,17 @@
+FROM python:3.11-slim
+
+# env setup
+WORKDIR /usr/local/src/lenaverse_bot
+
+# install lenaverse_bot
+COPY . ./
+RUN set -ex; \
+    # remove example app
+    rm -rf /app; \
+    \
+    python -m pip --no-cache-dir install ./
+
+# run as unprivileged user
+USER nobody
+
+CMD [ "lenaverse-bot" ]
diff --git a/lenaverse_bot/__init__.py b/lenaverse_bot/__init__.py
index 9254a05..02f491e 100644
--- a/lenaverse_bot/__init__.py
+++ b/lenaverse_bot/__init__.py
@@ -6,4 +6,4 @@ import discord
 discord.utils.setup_logging()
 
 _logger = logging.getLogger(__name__)
-_logger.setLevel(os.getenv("LOG_LEVEL", logging.WARN))
+_logger.setLevel(os.getenv("LOG_LEVEL", logging.INFO))