diff --git a/.drone.yml b/.drone.yml
index 6c800c7..58a72f0 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -21,16 +21,7 @@ pipeline:
       TAGS: netgo
       GOPATH: /srv/app
     commands:
-      - adduser -h /home/drone-scp -s /bin/bash -D -S drone-scp
-      - passwd -d drone-scp
-      - mkdir -p /home/drone-scp/.ssh
-      - chmod 700 /home/drone-scp/.ssh
-      - cp tests/.ssh/id_rsa.pub /home/drone-scp/.ssh/authorized_keys
-      - chown -R drone-scp /home/drone-scp/.ssh
-      # install ssh and start server
-      - apk update && apk add openssh openrc
-      - rm -rf /etc/ssh/ssh_host_rsa_key /etc/ssh/ssh_host_dsa_key
-      - ./tests/entrypoint.sh /usr/sbin/sshd -D &
+      - make ssh-server
       - make dep_install
       - make vet
       - make lint
diff --git a/.drone.yml.sig b/.drone.yml.sig
index 5834c47..9da9354 100644
--- a/.drone.yml.sig
+++ b/.drone.yml.sig
@@ -1 +1 @@
-eyJhbGciOiJIUzI1NiJ9.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.IAFdOkPn0H9F51-QsmBFA9y2-HXnW4ePK-1Ynz9INcQ
\ No newline at end of file
+eyJhbGciOiJIUzI1NiJ9.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.bENccpP30e96ryaYuQdC6cKhbKODOphBnwJgfVWFNtw
\ No newline at end of file
diff --git a/Makefile b/Makefile
index f9d7369..5b61910 100644
--- a/Makefile
+++ b/Makefile
@@ -112,6 +112,18 @@ coverage:
 	chmod +x .codecov && \
 	./.codecov -f .cover/coverage.txt
 
+ssh-server:
+	adduser -h /home/drone-scp -s /bin/bash -D -S drone-scp
+	passwd -d drone-scp
+	mkdir -p /home/drone-scp/.ssh
+	chmod 700 /home/drone-scp/.ssh
+	cp tests/.ssh/id_rsa.pub /home/drone-scp/.ssh/authorized_keys
+	chown -R drone-scp /home/drone-scp/.ssh
+	# install ssh and start server
+	apk update && apk add openssh openrc
+	rm -rf /etc/ssh/ssh_host_rsa_key /etc/ssh/ssh_host_dsa_key
+	./tests/entrypoint.sh /usr/sbin/sshd -D &
+
 clean:
 	go clean -x -i ./...
 	rm -rf coverage.txt $(EXECUTABLE) $(DIST) vendor