Update '.drone.yml'

.drone.yml

@@ -13,14 +13,17 @@ steps:
         KNOWN_HOSTS:
           from_secret: known-hosts # this is just $(ssh-keyscan -p 2222 leonetienne.de)
       commands:
-        - cd "GCryptLib/doxygen"
         - apt-get update
         - >-
           apt-get
           install
           openssh-client
           rsync
+          make
+          doxygen
           -y
+        - cd "GCryptLib/doxygen"
+        - make
         - eval "$(ssh-agent -s)"
         - mkdir -p ~/.ssh
         - echo "$SSH_PRIV" > ~/.ssh/id_ed25519
@@ -38,5 +41,5 @@ steps:
           --delete-excluded
           -e
           "ssh -o IdentitiesOnly=yes -p 2222"
-          ./
+          ./build/
           doxygen-gcrypt@leonetienne.de:app