drone: limit depth to speed up cloning and limit size on disk

.drone.yml

@@ -3,7 +3,7 @@
 # drone sign c3d2/c3d2-web --save
 kind: pipeline
 type: ssh
-name: deploy
+name: deploy website
 
 server:
   host: c3d2-web.flpk.zentralwerk.org
@@ -11,15 +11,18 @@ server:
   ssh_key:
     from_secret: ssh_key
 
+clone:
+  depth: 25
+
 steps:
-  - name: build website
+  - name: build html website
     commands:
       - make -j$(nproc) export DESTDIR=/var/www/c3d2
-  - name: build gemini
+  - name: build gemini website
     commands:
       - make -f Makefile.gemini -j$(nproc) export DESTDIR=/var/gemini
 ---
 kind: signature
-hmac: 74a444419e00498f39a960ce7bc455b172859598e4d78eaaed14c9c115334846
+hmac: 2b445804eba8a529a0759c216b1f99dc01975b8398ccf52346d94adbbf150ef7
 
 ...