Allow optional image name to be passed

app/coffee/CommandRunner.coffee

@@ -2,7 +2,7 @@ spawn = require("child_process").spawn
 logger = require "logger-sharelatex"
 
 module.exports = CommandRunner =
-	run: (project_id, command, directory, timeout, callback = (error) ->) ->
+	run: (project_id, command, directory, image, timeout, callback = (error) ->) ->
 		command = (arg.replace('$COMPILE_DIR', directory) for arg in command)
 		logger.log project_id: project_id, command: command, directory: directory, "running command"
 		logger.warn "timeouts and sandboxing are not enabled with CommandRunner"

app/coffee/CompileManager.coffee

@@ -28,6 +28,7 @@ module.exports = CompileManager =
 				mainFile:  request.rootResourcePath
 				compiler:  request.compiler
 				timeout:   request.timeout
+				image:     request.imageName
 			}, (error) ->
 				return callback(error) if error?
 				logger.log project_id: request.project_id, time_taken: Date.now() - timer.start, "done compile"

app/coffee/LatexRunner.coffee

@@ -6,7 +6,7 @@ CommandRunner = require(Settings.clsi?.commandRunner or "./CommandRunner")
 
 module.exports = LatexRunner =
 	runLatex: (project_id, options, callback = (error) ->) ->
-		{directory, mainFile, compiler, timeout} = options
+		{directory, mainFile, compiler, timeout, image} = options
 		compiler ||= "pdflatex"
 		timeout  ||= 60000 # milliseconds
 
@@ -27,7 +27,7 @@ module.exports = LatexRunner =
 		else
 			return callback new Error("unknown compiler: #{compiler}")
 
-		CommandRunner.run project_id, command, directory, timeout, callback
+		CommandRunner.run project_id, command, directory, image, timeout, callback
 
 	_latexmkBaseCommand: [ "latexmk", "-cd", "-f", "-jobname=output", "-auxdir=$COMPILE_DIR", "-outdir=$COMPILE_DIR"]
 

app/coffee/RequestParser.coffee

@@ -21,6 +21,9 @@ module.exports = RequestParser =
 				compile.options.timeout
 				default: RequestParser.MAX_TIMEOUT
 				type: "number"
+			response.imageName = @_parseAttribute "imageName",
+				compile.options.imageName,
+				type: "string"
 
 			if response.timeout > RequestParser.MAX_TIMEOUT
 				response.timeout = RequestParser.MAX_TIMEOUT
@@ -71,7 +74,6 @@ module.exports = RequestParser =
 					throw "#{name} attribute should be a #{options.type}"
 		else
 			return options.default if options.default?
-			throw "Default not implemented"
 		return attribute
 
 	_sanitizePath: (path) ->