Add wrapper and remove default arguments from Dockerfile

Dockerfile

@@ -38,4 +38,3 @@ COPY nlp /usr/local/bin
 COPY spacy_nlp /usr/local/bin
 
 ENTRYPOINT ["nlp"]
-CMD ["--help"]

wrapper/nlp

@@ -0,0 +1,31 @@
+#!/usr/bin/env python3
+# coding=utf-8
+
+import argparse
+import subprocess
+
+container_image = 'gitlab.ub.uni-bielefeld.de:4567/sfb1288inf/nlp:latest'
+
+parser = argparse.ArgumentParser(add_help=False)
+parser.add_argument(
+    '-i',
+    dest='input_dir',
+    required=False
+)
+parser.add_argument(
+    '-o',
+    dest='output_dir',
+    required=False
+)
+args, nlp_args = parser.parse_known_args()
+
+if args.input_dir == None or args.output_dir == None:
+    if args.input_dir != None:
+        nlp_args.append('-i')
+        nlp_args.append('/files_for_nlp')
+    if args.output_dir != None:
+        nlp_args.append('-o')
+        nlp_args.append('/files_from_nlp')
+    subprocess.run(['docker', 'run', '--rm', '-it', container_image] + nlp_args)
+else:
+    subprocess.run(['docker', 'run', '--rm', '-it', '-v', args.input_dir + ':/files_for_nlp', '-v', args.output_dir + ':/files_from_nlp', container_image, '-i', '/files_for_nlp', '-o', '/files_from_nlp'] + nlp_args)