Ditch the bash requirement

scripts/cmdeploy

@@ -1,6 +1,5 @@
-#!/usr/bin/env bash
+#!/bin/sh -e
 #
 # Wrapper for cmdelpoy to run it in activated virtualenv.
-set -e
 . venv/bin/activate
 cmdeploy "$@"

scripts/initenv.sh

@@ -1,5 +1,4 @@
-#!/bin/bash
-set -e
+#!/bin/sh -e
 python3 -m venv --upgrade-deps venv
 
 venv/bin/pip install -e chatmaild