build(Build-docu-only-on-master,-python3-venv-(sigh)..): Added extra install ubuntu dept, trigger documentation build only on branch master

.drone.yml

@@ -50,7 +50,10 @@ volumes:
 ---
 kind: pipeline
 type: docker
-name: documentation_build
+name: documentation_build_master
+trigger:
+  branch:
+    master
 
 clone:
   depth: 3
@@ -66,5 +69,3 @@ steps:
         from_secret: docker_username
       password:
         from_secret: docker_password
-      when:
-        branch: master

scripts/build_ubuntu.sh

@@ -10,7 +10,7 @@ set -e
 # Update cache
 apt update
 # Install requirements
-apt install -y git python3-virtualenv libopenblas-dev python3-pip libfftw3-dev libusb-1.0-0-dev libpulse-dev python3-build
+apt install -y git python3-virtualenv python3-venv libopenblas-dev python3-pip libfftw3-dev libusb-1.0-0-dev libpulse-dev python3-build
 # Build
 git submodule update --init --recursive
 python3 -m venv .venv