Add OpenSSH and OpenSSL.

For ssh-ca and ssl-ca.

Dockerfile

@@ -4,6 +4,8 @@ RUN apk add --update --no-cache \
         build-base \
         docker \
         git \
+        openssh \
+        openssl \
     ;
 RUN wget https://github.com/cloudbees-oss/juxr/releases/download/0.1.22/juxr-x86_64-unknown-linux-musl.tar.gz -O - | tar -xzC /usr/local/bin
 ENV GIT_AUTHOR_EMAIL='you@example.com' \