switch to ghcr base images in Dockerfiles

docker/Dockerfile

@@ -1,4 +1,4 @@
-ARG BASE_IMAGE=registry.opensource.zalan.do/library/alpine-3:latest
+ARG BASE_IMAGE=ghcr.io/alpine-3:latest
 FROM golang:1.25-alpine AS builder
 ARG VERSION=latest
 

logical-backup/Dockerfile

@@ -1,4 +1,4 @@
-ARG BASE_IMAGE=registry.opensource.zalan.do/library/ubuntu-22.04:latest
+ARG BASE_IMAGE=ghcr.io/ubuntu-22.04:latest
 FROM ${BASE_IMAGE}
 LABEL maintainer="Team ACID @ Zalando <team-acid@zalando.de>"
 

ui/Dockerfile

@@ -1,4 +1,4 @@
-ARG BASE_IMAGE=registry.opensource.zalan.do/library/python-3.11-slim:latest
+ARG BASE_IMAGE=ghcr.io/python-3.11-slim:latest
 ARG NODE_IMAGE=node:lts-alpine
 
 FROM $NODE_IMAGE AS build
@@ -15,18 +15,14 @@ LABEL maintainer="Team ACID @ Zalando <team-acid@zalando.de>"
 EXPOSE 8081
 WORKDIR /app
 
-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 g++ libpq-dev python3-dev python3-distutils \
- && apt-get -qq -y clean \
- && rm -rf /var/lib/apt/lists/*
-
-COPY requirements.txt .
-COPY start_server.sh .
-RUN pip install -r requirements.txt
+COPY requirements.txt start_server.sh ./
+# Install dependencies for building psycopg2 from source as well
+RUN dnf install libpq libpq-devel gcc -y \
+    && pip install -r requirements.txt --no-cache-dir \
+    && dnf remove libpq-devel gcc -y \
+    && dnf clean all
 
 COPY operator_ui operator_ui/
-COPY --from=build /workdir/operator_ui/static/build/ operator_ui/static/build/
 
 ARG VERSION=dev
 RUN sed -i "s/__version__ = .*/__version__ = '${VERSION}'/" operator_ui/__init__.py