Clean up bin/docker-entrypoint server check when running litestream

Remove what launches the sever (thrust, litestream) from the check
to see if we are running the server.  That makes the check more
resilient to environment changes (example: not running thruster on
fly.io).

Author: rubys

lib/generators/dockerfile_generator.rb

@@ -1164,11 +1164,11 @@ def start_command
     else
       command = Shellwords.split(procfile.values.first)
 
-      if command.first == "./bin/thrust"
-        command[1..]
-      else
-        command
-      end
+      thrust = command.index("./bin/thrust")
+      thrust = command.index("litestream:run") if thrust.nil?
+      command = command[thrust+1...] unless thrust.nil?
+
+      command
     end
   end
 

test/results/litestream/docker-entrypoint

@@ -7,7 +7,7 @@ if [ -z "${LD_PRELOAD+x}" ]; then
 fi
 
 # If running the rails server then create or migrate existing database
-if [ "${@: -5:1}" == "./bin/rake" ] && [ "${@: -4:1}" == litestream:run ] && [ "${@: -3:1}" == "./bin/thrust" ] && [ "${@: -2:1}" == "./bin/rails" ] && [ "${@: -1:1}" == "server" ]; then
+if [ "${@: -2:1}" == "./bin/rails" ] && [ "${@: -1:1}" == "server" ]; then
   ./bin/rails db:prepare
 fi