build: upgrade edxapp docker image to python 3.11 (#34982)

* build: upgrade edxapp docker image to python 3.11
---------

Co-authored-by: Tim McCormack <tmccormack@edx.org>

.github/workflows/docker-publish.yml

@@ -4,6 +4,7 @@ on:
   push:
     branches:
       - master
+
 jobs:
   # Push image to GitHub Packages.
   # See also https://docs.docker.com/docker-hub/builds/
@@ -35,7 +36,7 @@ jobs:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_PASSWORD }}
 
-      - name: Build and push lms base docker image
+      - name: Build and push lms/cms base docker images
         env:
           DOCKERHUB_PASSWORD: ${{ secrets.DOCKERHUB_PASSWORD }}
           DOCKERHUB_USERNAME: ${{ secrets.DOCKERHUB_USERNAME }}

Dockerfile

@@ -46,20 +46,24 @@ RUN useradd -m --shell /bin/false app
 RUN echo "locales locales/default_environment_locale select en_US.UTF-8" | debconf-set-selections
 RUN echo "locales locales/locales_to_be_generated multiselect en_US.UTF-8 UTF-8" | debconf-set-selections
 
+# Setting up ppa deadsnakes to get python 3.11
+RUN apt-get update && \
+  apt-get install -y software-properties-common && \
+  apt-add-repository -y ppa:deadsnakes/ppa
+
 # Install requirements that are absolutely necessary
 RUN apt-get update && \
     apt-get -y dist-upgrade && \
     apt-get -y install --no-install-recommends \
-        python3 \
-        python3-venv \
-        python3.8 \
-        python3.8-minimal \
-        # python3-dev: required for building mysqlclient python package version 2.2.0
-        python3-dev \
-        libpython3.8 \
-        libpython3.8-stdlib \
+        python3-pip \
+        python3.11 \
+        # python3-dev: required for building mysqlclient python package
+        python3.11-dev \
+        python3.11-venv \
+        libpython3.11 \
+        libpython3.11-stdlib \
         libmysqlclient21 \
-        # libmysqlclient-dev: required for building mysqlclient python package version 2.2.0
+        # libmysqlclient-dev: required for building mysqlclient python package
         libmysqlclient-dev \
         pkg-config \
         libssl1.1 \
@@ -105,7 +109,7 @@ RUN apt-get update && \
 
 # Setup python virtual environment
 # It is already 'activated' because $VIRTUAL_ENV/bin was put on $PATH
-RUN python3.8 -m venv "${VIRTUAL_ENV}"
+RUN python3.11 -m venv "${VIRTUAL_ENV}"
 
 # Install python requirements
 # Requires copying over requirements files, but not entire repository