build docker image from local files, not git clone

.dockerignore

@@ -0,0 +1,40 @@
+# Compiled Object files
+*.slo
+*.lo
+*.o
+*.obj
+
+# Precompiled Headers
+*.gch
+*.pch
+
+# Compiled Dynamic libraries
+*.so
+*.dylib
+*.dll
+
+# Compiled Static libraries
+*.lai
+*.la
+*.a
+*.lib
+
+# Executables
+*.exe
+*.out
+*.app
+
+# Gcov files
+*.gcno
+*.gcov
+*.gcda
+
+# Python files
+*.pyc
+*.pyo
+
+# Build directories
+build/
+
+# Clion directory
+.idea/