Add vserver Docker deploy script

deploy/vserver.env.example

@@ -0,0 +1,24 @@
+# SSH host or alias from ~/.ssh/config.
+REMOTE_HOST=myvserver
+
+# Remote filesystem layout.
+REMOTE_APP_DIR=/opt/rolemasterdb
+REMOTE_DATA_DIR=/opt/rolemasterdb/data
+
+# Docker names on the remote host.
+IMAGE_NAME=rolemasterdb
+CONTAINER_NAME=rolemasterdb
+
+# Port mapping: host:container.
+HOST_PORT=8080
+CONTAINER_PORT=8080
+
+# Set to 1 if docker on the server must be run through sudo.
+REMOTE_USE_SUDO=0
+
+# Optional env file that already exists on the server and should be passed
+# through to docker run with --env-file.
+REMOTE_ENV_FILE=
+
+# Prefix used for the generated local tarball name.
+RELEASE_PREFIX=rolemasterdb