Update gitpod dockerfile for mariadb and python3.11

Remove duplicate install steps in gitpod.yml

.gitpod.dockerfile

@@ -1,15 +1,16 @@
 FROM gitpod/workspace-python
 
-# install Redis - we might not need ot remove the apt-lists bit
-
-
-RUN sudo apt-get update  && sudo apt-get install -y build-essential libmariadb-dev libmariadbclient-dev libmariadb3 mariadb-client mariadb-common && sudo rm -rf /var/lib/apt/lists/*
+# install Mariadb
+RUN sudo apt-get update \
+    && sudo apt-get install -y \
+    build-essential \
+    libmariadb-dev libmariadb-dev-compat \
+    mariadb-client mariadb-common \
+    && sudo rm -rf /var/lib/apt/lists/*
 
 # install RabbitMQ
 RUN sudo apt-get update  && sudo apt-get install rabbitmq-server -y --fix-missing && sudo rm -rf /var/lib/apt/lists/*
 
 # https://www.gitpod.io/docs/introduction/languages/python
 RUN pyenv install 3.11 \
     && pyenv global 3.11
-
-RUN python -m pip install --upgrade pip uv

.gitpod.yml

@@ -7,10 +7,6 @@ tasks:
   - name: main terminal
     init: |
       cp ./.env.gitpod ./.env
-      # upgrade pyenv to use recent version of python
-      cd /home/gitpod/.pyenv/plugins/python-build/../.. && git pull && cd -
-      pyenv install 3.11.9
-      pyenv global 3.11.9
       python -m venv .venv
       source .venv/bin/activate
       mysqladmin create greencheck