Try somethings new

Dockerfile

@@ -1,4 +1,4 @@
-FROM debian:latest AS builder
+FROM debian:bullseye AS builder
 USER root
 ARG OPENPYPE_PYTHON_VERSION=3.9.16
 ARG OPENPYPE_QUAD_SYNCHRO_VERSION="3.16.9-quad-1.5.0"
@@ -15,17 +15,6 @@ RUN apt-get update -y \
     libreadline-dev libsqlite3-dev llvm libncursesw5-dev xz-utils tk-dev libxml2-dev libxmlsec1-dev  \
     libffi-dev liblzma-dev patchelf libgl1 libxcb-* libxkbcommon* libdbus-1-3
 
-# Install pyenv
-RUN curl https://pyenv.run | bash && \
-    echo 'export PATH="$HOME/.pyenv/bin:$PATH"'>> $HOME/.bashrc && \
-    echo 'eval "$(pyenv init -)"' >> $HOME/.bashrc && \
-    echo 'eval "$(pyenv virtualenv-init -)"' >> $HOME/.bashrc && \
-    echo 'eval "$(pyenv init --path)"' >> $HOME/.bashrc
-SHELL ["/bin/bash", "--login", "-c"]
-
-# Install python
-RUN pyenv install ${OPENPYPE_PYTHON_VERSION}
-
 # Clone OpenPype
 RUN cd /opt/ && \
     git clone --recurse-submodules https://github.com/quadproduction/OpenPype.git && \
@@ -34,6 +23,20 @@ RUN cd /opt/ && \
 
 WORKDIR /opt/OpenPype
 
+# Install pyenv
+RUN curl https://pyenv.run | bash && \
+    echo 'export PYENV_ROOT="$HOME/.pyenv"'>> $HOME/.bashrc && \
+    echo 'command -v pyenv >/dev/null || export PATH="$PYENV_ROOT/bin:$PATH"' >> $HOME/.bashrc && \
+    echo 'eval "$(pyenv init -)"' >> $HOME/.bashrc
+
+SHELL ["/bin/bash", "--login", "-c"]
+
+RUN source ~/.bashrc
+
+# Install python
+RUN pyenv install ${OPENPYPE_PYTHON_VERSION}
+RUN pyenv local ${OPENPYPE_PYTHON_VERSION}
+
 # The OPENPYPE_QUAD_SYNCHRO_VERSION should be re-apply/updated when the docker container is (re)started
 # First Add a container environnement variable named OPENPYPE_QUAD_SYNCHRO_VERSION set to the version wanted, then
 # set the container CMD to:
@@ -45,5 +48,8 @@ RUN pyenv local ${OPENPYPE_PYTHON_VERSION}
 # Create virtualenv
 RUN ./tools/create_env.sh && ./tools/fetch_thirdparty_libs.sh
 
+# Activate the virtualenv
+RUN source .venv/bin/activate
+
 ENTRYPOINT [""]
 CMD [""]