get user and host from secrets

.drone.yml

@@ -8,8 +8,8 @@ steps:
   environment:
     HOST:
       from_secret: host
-    USERNAME:
-      from_secret: username
+    USER:
+      from_secret: user
     SSH_KEY:
       from_secret: ssh_key
     REPO: https://git.pizzawednesday.club/ktyl/period3.xyz
@@ -27,5 +27,5 @@ steps:
   # skip key checking
   - echo "Host *\n\tStrictHostKeyChecking no\n\n" > ~/.ssh/config
   - cat ~/.ssh/config
-  - ssh gemini@period3.xyz "[[ -d gemini/content ]] && rm -r gemini/content"
+  - ssh '$USER@$HOST' "[[ -d gemini/content ]] && rm -r gemini/content"
   - rsync -rP content/* gemini@period3.xyz:gemini/content