Use --no-cache-dir option for pip installs

Update example with image on ghcr.io

examples/0_minimal/config_server.yaml

@@ -4,7 +4,7 @@ metadata:
   name: minimal-config
   namespace: config-server
 spec:
-  image: config-server:latest
-  imagePullPolicy: Never
+  image: ghcr.io/tu-wien-datalab/config-server:main
+  imagePullPolicy: IfNotPresent
   containerPort: 80
   configMountPath: /var/lib/config-server

operator/Dockerfile

@@ -1,7 +1,7 @@
 FROM python:3.12-alpine
 
 COPY requirements.txt requirements.txt
-RUN pip install -r requirements.txt
+RUN pip install -r requirements.txt --no-cache-dir
 
 COPY operator.py operator.py
 CMD kopf run operator.py --verbose

server/Dockerfile

@@ -1,7 +1,7 @@
 FROM python:3.12-alpine
 
 COPY requirements.txt requirements.txt
-RUN pip install -r requirements.txt
+RUN pip install -r requirements.txt --no-cache-dir
 
 COPY server.py server.py
 CMD python server.py