fix docker build for UI and bumped some outdated versions in docs and config (#3017)

* fix docker build for UI and bumped some outdated versions in docs and config
* update helm chart image again because of wrong format field
* switch to new registry ghcr.io for e2e test
* update e2e test runner Dockerfile

e2e/Dockerfile

@@ -1,27 +1,20 @@
 # An image to run e2e tests.
 # The image does not include the tests; all necessary files are bind-mounted when a container starts.
-FROM ubuntu:20.04
+FROM python:3.11-slim
 LABEL maintainer="Team ACID @ Zalando <team-acid@zalando.de>"
 
 ENV TERM xterm-256color
 
-COPY requirements.txt ./
-
-RUN apt-get update \
-    && apt-get install --no-install-recommends -y \
-           python3 \
-           python3-setuptools \
-           python3-pip \
-           curl \
-           vim \
-    && pip3 install --no-cache-dir -r requirements.txt \
+RUN apt-get -qq -y update \
+ # https://www.psycopg.org/docs/install.html#psycopg-vs-psycopg-binary
+    && apt-get -qq -y install --no-install-recommends curl vim python3-dev \
     && curl -LO https://dl.k8s.io/release/v1.32.9/bin/linux/amd64/kubectl \
     && chmod +x ./kubectl \
     && mv ./kubectl /usr/local/bin/kubectl \
-    && apt-get clean \
+    && apt-get -qq -y clean \
     && rm -rf /var/lib/apt/lists/*
 
-# working line
-# python3 -m unittest discover -v --failfast -k test_e2e.EndToEndTestCase.test_lazy_spilo_upgrade --start-directory tests
-ENTRYPOINT ["python3", "-m", "unittest"]
-CMD ["discover","-v","--failfast","--start-directory","/tests"]
+COPY requirements.txt ./
+RUN pip install -r ./requirements.txt
+
+CMD ["python", "-m", "unittest", "discover", "-v", "--failfast", "--start-directory", "/tests"]