diff --git a/dockerize/dockerize.py b/dockerize/dockerize.py
index 1042e58..96340ed 100644
--- a/dockerize/dockerize.py
+++ b/dockerize/dockerize.py
@@ -39,11 +39,15 @@ def __init__(self,
                  runtime=None,
                  buildcmd=None,
                  symlinks=SymlinkOptions.PRESERVE,
+                 envs=None,
+                 workdir=None,
                  build=True):
 
         self.docker = {}
         self.docker['runtime'] = runtime if runtime else 'docker'
         self.docker['buildcmd'] = buildcmd if buildcmd else 'build'
+        self.docker['envs'] = envs if envs else []
+        self.docker['workdir'] = workdir
 
         if cmd:
             self.docker['cmd'] = json.dumps(shlex.split(cmd))
@@ -230,7 +234,7 @@ def copy_files(self):
                 self.copy_file(srcitem, dst)
 
     def build_image(self):
-        cmd = [self.docker['runtime'], self.docker['buildcmd']]
+        cmd = [self.docker['runtime']] + shlex.split(self.docker['buildcmd'])
         if 'tag' in self.docker:
             cmd += ['-t', self.docker['tag']]
         cmd += [self.targetdir]
diff --git a/dockerize/main.py b/dockerize/main.py
index 9a2f1f4..cc75652 100644
--- a/dockerize/main.py
+++ b/dockerize/main.py
@@ -46,6 +46,15 @@ def parse_args():
                         default=[],
                         help='Add file <src> to image at <dst>')
 
+    parser.add_argument('--env',
+                        action='append',
+                        default=[],
+                        help='Add ENV={arg} in Dockerfile')
+
+    parser.add_argument('--workdir',
+                        default=None,
+                        help='Add WORKDIR={arg} in Dockerfile')
+
     parser.add_argument('--symlinks', '-L',
                         default='copy-unsafe',
                         help='One of preserve, copy-unsafe, '
@@ -114,7 +123,9 @@ def main():
                     tag=args.tag,
                     targetdir=args.output_dir,
                     build=not args.no_build,
-                    symlinks=args.symlinks)
+                    symlinks=args.symlinks,
+                    envs=args.env,
+                    workdir=args.workdir)
 
     for path in args.paths:
         app.add_file(path)
diff --git a/dockerize/templates/Dockerfile b/dockerize/templates/Dockerfile
index e33b102..d9cc88a 100644
--- a/dockerize/templates/Dockerfile
+++ b/dockerize/templates/Dockerfile
@@ -7,3 +7,11 @@ ENTRYPOINT {{docker.entrypoint}}
 {% if docker.cmd -%}
 CMD {{docker.cmd}}
 {% endif -%}
+
+{% if docker.workdir is not none %}
+WORKDIR {{docker.workdir}}
+{% endif %}
+
+{% for env in docker.envs %}
+ENV {{env}}
+{% endfor %}