little fix: fail outside of socket connection

ChangeLog

@@ -1,3 +1,10 @@
+2016-01-31 21:58  marc
+
+	* ChangeLog, nodejs/docker/docker.js,
+	  nodejs/public/javascripts/servicedock.js,
+	  nodejs/public/stylesheets/servicedock.css,
+	  nodejs/views/index.ejs: create works
+
 2016-01-29 15:55  marc
 
 	* nodejs/docker/docker.js,

nodejs/sockets/index.js

@@ -17,6 +17,10 @@ module.exports = function(io) {
         proc.exec(cmd, callback);
     }
 
+    function fail(txt, data) {
+        console.log("** "+txt, data);
+    }
+
     var oldcontainer = null;
     function containerinspect(error, stdout, stderr) {
         if (error || stderr)
@@ -96,7 +100,7 @@ module.exports = function(io) {
 
         function modify(cmd, name) {
             if (!name.match(/^[a-z0-9][-_:.+a-z0-9]*$/i))
-                return fail("illegal instance name");
+                return this.fail("illegal instance name");
             exec("docker "+cmd+" "+name, updatecontainers);
         }
 
@@ -104,7 +108,7 @@ module.exports = function(io) {
             if (cmds.length>0)
                 exec(cmds.shift(), function(error, stdout, stderr) {
                     if (error || stderr)
-                        return fail("create container failed", {
+                        return this.fail("create container failed", {
                             error: error, stderr: stderr, stdout: stdout
                         });
                     createContainer(cmds);
@@ -175,7 +179,7 @@ module.exports = function(io) {
 
         function new_bash(name) {
             if (!name.match(/^[a-z0-9][-_:.+a-z0-9]*$/i))
-                return fail("illegal instance name");
+                return this.fail("illegal instance name");
             if (bash_connections[name]) return;
             bash_connections[name] =
                 pty.spawn("docker", ["exec", "-it", name, "bash", "-i"]);