env: simplify Gitpod integration

Author: jwpjrdev

.gitpod.Dockerfile

@@ -6,4 +6,4 @@ RUN sudo apt-get install -y \
     xorriso \
     qemu-system-x86-64
 
-RUN python3 -m install requests xbstrap && pip install --upgrade pip
+RUN python3 -m install requests xbstrap

.gitpod.yml

@@ -7,6 +7,6 @@ ports:
   onOpen: open-preview
 
 tasks:
-# prebuilds will fail if the process never ends (i.e. because qemu was launched)
-# realistically, the build and run commands should be seperate
-- init: ./aero.py --test
+- init: ./aero.py --test --no-run
+# ideally, it wouldn't build a second time
+  command: ./aero.py --test