diff --git a/.dockerignore b/.dockerignore
index f59ec20..e524ad3 100644
--- a/.dockerignore
+++ b/.dockerignore
@@ -1 +1,5 @@
-*
\ No newline at end of file
+*
+!src/
+!tests/
+!pyproject.toml
+!README.md
diff --git a/Dockerfile b/Dockerfile
index 0072d9e..7ef8bfd 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,10 +1,12 @@
 FROM python:3.13-slim-bullseye
 
-USER root
+ENV DEBIAN_FRONTEND=noninteractive
 
 ARG INSTALL_GIT=false
 RUN if [ "$INSTALL_GIT" = "true" ]; then \
-    apt-get update && apt-get install -y git && rm -rf /var/lib/apt/lists/*; \
+    apt-get update && apt-get install -y --no-install-recommends \
+    git \
+    && rm -rf /var/lib/apt/lists/*; \
     fi
 
 # Runtime dependency
@@ -12,11 +14,13 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     ffmpeg \
     && rm -rf /var/lib/apt/lists/*
 
-RUN pip install markitdown
+WORKDIR /app
+COPY . /app
+RUN pip --no-cache-dir install .
 
 # Default USERID and GROUPID
-ARG USERID=10000
-ARG GROUPID=10000
+ARG USERID=nobody
+ARG GROUPID=nogroup
 
 USER $USERID:$GROUPID