wrapper scripts for launching

docker/Dockerfile

@@ -1,5 +1,6 @@
 FROM gliderlabs/alpine
 
 ADD build_image/discourse-auth-proxy /bin/discourse-auth-proxy
+ADD start.sh /bin/start.sh
 
-CMD ["/bin/discourse-auth-proxy"]
+CMD ["/bin/start.sh"]

docker/build.rb

@@ -1,6 +1,7 @@
 require 'pty'
 
 version = "1.0.0"
+$nocache = false
 
 def run(command)
   lines = []
@@ -20,7 +21,7 @@ end
 
 
 def build(path)
-  lines = run("cd #{path} && docker build --no-cache .")
+  lines = run("cd #{path} && docker build #{$nocache ? "--no-cache" : ""} .")
   lines[-1]["successfully built ".length..-1].strip
 end
 
@@ -33,7 +34,7 @@ tag = "#{repo}:#{version}"
 latest = "#{repo}:#{latest}"
 
 img = build(".")
-run "docker tag #{img} #{tag}"
-run "docker tag #{img} #{latest}"
+run "docker tag -f #{img} #{tag}"
+run "docker tag -f #{img} #{latest}"
 
 

docker/start.sh

@@ -0,0 +1,35 @@
+#!/bin/sh
+
+GOOD=true
+
+if [ -z "$ORIGIN_URL" ]; then
+  unset GOOD
+fi
+
+if [ -z "$PROXY_URL" ]; then
+  unset GOOD
+fi
+
+if [ -z "$SSO_SECRET" ]; then
+  unset GOOD
+fi
+
+if [ -z "$SSO_URL" ]; then
+  unset GOOD
+fi
+
+if [ -z "$GOOD" ]; then
+  echo "#!/bin/sh"
+  echo
+  echo "# you are going to need to set the following env vars and run"
+  echo "# the image like this"
+  echo
+  echo "ORIGIN_URL=http://somesite.com"
+  echo "SSO_SECRET=somesecret"
+  echo "SSO_URL=http://someurl"
+  echo "HOST_PORT=3001"
+  echo
+  echo "docker run -d --restart:always -e ORIGIN_URL=\$ORIGIN_URL -e PROXY_URL=http://0.0.0.0:80 -e SSO_SECRET=\$SSO_SECRET -e SSO_URL=\$SSO_URL -p \$HOST_PORT:80 samsaffron/discourse-auth-proxy"
+else
+  exec /bin/discourse-auth-proxy
+fi