Update Dockerfile (#52)

* Update Python base image to 3.11.4-slim-bullseye

* Update sources.list to use HTTPS and install required packages

Author: milldr

Dockerfile

@@ -1,31 +1,31 @@
-FROM public.ecr.aws/docker/library/python:3.11.4-slim-buster
+FROM public.ecr.aws/docker/library/python:3.11.4-slim-bullseye
 
 ENV KUBECTL_VERSION 1.26.3
 ENV HELM_VERSION 3.11.1
 ENV HELMFILE_VERSION 0.143.5
 ENV CHAMBER_VERSION 2.11.1
-# Helm plugins:
-# https://github.com/databus23/helm-diff/releases
 ENV HELM_DIFF_VERSION 3.6.0
-# https://github.com/aslafy-z/helm-git/releases
-# We had issues with helm-diff 3.1.3 + helm-git 0.9.0,
-# previous workaround was to pin helm-git to version 0.8.1.
-# We expect this has been fixed now with helm-diff 3.3.2 + helm-git 0.11.1
 ENV HELM_GIT_VERSION 0.15.1
 
 ENV HELM_DATA_HOME   /root/.local/share/helm
 ENV HELM_CONFIG_HOME /root/.config/helm
 ENV HELM_CACHE_HOME  /root/.cache/helm
 
 RUN pip install awscli
-RUN apt-get update && apt-get install -y apt-utils curl
+
+# Replace HTTP with HTTPS in sources.list
+RUN sed -i 's|http://deb.debian.org|https://deb.debian.org|g' /etc/apt/sources.list
+
+# Update CA certificates and install required packages
+RUN apt-get update && apt-get install -y ca-certificates apt-utils curl
+
 RUN curl -1sLf 'https://dl.cloudsmith.io/public/cloudposse/packages/cfg/setup/bash.deb.sh' | bash
 
 RUN apt-get update && apt-get install -y \
-     	bash=5.0-4 \
-    	yq=4.32.1-1 \
-    	jq \
-    	git
+    bash \
+    yq \
+    jq \
+    git
 
 COPY entrypoint.sh /usr/local/bin/entrypoint
 ENTRYPOINT [ "/usr/local/bin/entrypoint" ]