chore: polished drone build script

.drone.yml

@@ -1,3 +1,9 @@
+# This file defines a Drone pipeline that builds a static website with "npm run build".
+# 
+# We mount the target directory of the project under "/var/www/{project}" to the
+# container "dist/" directory. A caveat is that the container builds files with "root"
+# permissions, so we need to fix those after each build.  
+
 kind: pipeline
 name: default
 
@@ -7,17 +13,13 @@ steps:
   volumes:
   - name: host-tutorato-dist
     path: /drone/src/dist
-  environment:
-    BASE_URL:
-      from_secret: base_url
   commands:
-  - pwd
   - npm install
   - npm run build
 
 volumes:
 - name: host-tutorato-dist
-  host:
+  host: # this volume is mounted on the host machine
     path: /var/www/tutorato
 
 trigger:
@@ -28,7 +30,7 @@ trigger:
 
 ---
 kind: pipeline
-type: exec
+type: exec # this job is executed on the host machine
 name: caddy-permissions
 
 depends_on: