diff --git a/.dockerignore b/.dockerignore
index 1269488f..07d50b4b 100644
--- a/.dockerignore
+++ b/.dockerignore
@@ -1 +1,29 @@
+**/__pycache__
+**/.venv
+**/.classpath
+**/.dockerignore
+**/.env
+**/.git
+**/.gitignore
+**/.project
+**/.settings
+**/.toolstarget
+**/.vs
+**/.vscode
+**/*.*proj.user
+**/*.dbmdl
+**/*.jfm
+**/bin
+**/charts
+**/docker-compose*
+**/compose*
+**/Dockerfile*
+**/node_modules
+**/npm-debug.log
+**/obj
+**/secrets.dev.yaml
+**/values.dev.yaml
+README.md
+
+
 data
diff --git a/Dockerfile b/Dockerfile
index 6ec450b5..0a2309f5 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM python:3.8.13-slim-buster
+FROM python:3.8.10-slim-buster
 
 
 LABEL authors="Patrick Jentsch <p.jentsch@uni-bielefeld.de>"
@@ -7,10 +7,12 @@ LABEL authors="Patrick Jentsch <p.jentsch@uni-bielefeld.de>"
 ARG DOCKER_GID
 ARG UID
 ARG GID
-ENV LANG=C.UTF-8
 
 
 ENV FLASK_APP nopaque.py
+ENV LANG=C.UTF-8
+ENV PYTHONDONTWRITEBYTECODE=1
+ENV PYTHONUNBUFFERED=1
 
 
 RUN apt-get update \