Workbench: Add pipx Bash completion.

workbench/Dockerfile

@@ -267,6 +267,7 @@ RUN apt-get update && \
     rabbitmqadmin --bash-completion  > /etc/bash_completion.d/rabbitmqadmin && \
     #poetry completions bash > /etc/bash_completion.d/poetry && \
     register-python-argcomplete gitlab > /etc/bash_completion.d/gitlab && \
+    register-python-argcomplete pipx -s bash > /etc/bash_completion.d/pipx && \
     invoke --print-completion-script bash > /etc/bash_completion.d/invoke && \
     fab --print-completion-script bash > /etc/bash_completion.d/fabric && \
     helm completion bash > /etc/bash_completion.d/helm && \