wip: ci: Build in Kubernetes

ci/Jenkinsfile

@@ -11,6 +11,10 @@ pipeline {
         disableConcurrentBuilds()
     }
 
+    environment {
+        HOME = "${env.WORKSPACE}"
+    }
+
     stages {
 
         stage('Build') {

ci/build.sh

@@ -1,3 +1,4 @@
+python3 -m pip install --user ruamel.yaml
 python3 /dev/fd/3 < songquotes.yml > public/songquotes.json 3<<EOF
 from ruamel.yaml import safe_load as load
 from json import dump