Resolve "Wolf license"

Closes #198 (closed) Closes #415 (closed)

.gitlab-ci.yml

@@ -19,12 +19,38 @@ license_header:
   stage: license
   image: labrobotica/wolf_deps:16.04
   before_script:
-    - 'which ssh-agent || ( apt-get update -qy && apt-get install openssh-client -qqy )'
-    - eval `ssh-agent -s`
-    - echo "${SSH_PRIVATE_KEY}"
-    - echo "${SSH_PRIVATE_KEY}" | tr -d '\r' | ssh-add - > /dev/null # add ssh key
+    ##
+    ## Install ssh-agent if not already installed, it is required by Docker.
+    ## (change apt-get to yum if you use an RPM-based image)
+    ##
+    - 'command -v ssh-agent >/dev/null || ( apt-get update -y && apt-get install openssh-client -y )'
+
+    ##
+    ## Run ssh-agent (inside the build environment)
+    ##
+    - eval $(ssh-agent -s)
+
+    ##
+    ## Add the SSH key stored in SSH_PRIVATE_KEY variable to the agent store
+    ## We're using tr to fix line endings which makes ed25519 keys work
+    ## without extra base64 encoding.
+    ## https://gitlab.com/gitlab-examples/ssh-private-key/issues/1#note_48526556
+    ##
+    - echo "$SSH_PRIVATE_KEY" | tr -d '\r' | ssh-add -
+
+    ##
+    ## Create the SSH directory and give it the right permissions
+    ##
     - mkdir -p ~/.ssh
     - chmod 700 ~/.ssh
+
+    ##
+    ## Assuming you created the SSH_KNOWN_HOSTS variable, uncomment the
+    ## following two lines.
+    ##
+    - echo "$SSH_KNOWN_HOSTS" >> ~/.ssh/known_hosts
+    - chmod 644 ~/.ssh/known_hosts
+    
     - echo "$SSH_PUBLIC_KEY"
     - echo "$SSH_PUBLIC_KEY" >> ~/.ssh/id_rsa.pub
   script: