Update Dockerfile

Dockerfile

@@ -62,11 +62,11 @@ RUN pip install --no-cache-dir --upgrade -r requirements.txt
 #COPY --chown=user teaching_arithmetic /teaching_arithmetic
 #COPY --chown=user . /app
 COPY . /app
-RUN mkdir ./out
-RUN mkdir ./out/addition_train
-COPY ./out /out
+RUN mkdir out
+RUN mkdir out/addition_train
+COPY out /out
 RUN chmod +x /out
-COPY ./out/addition_train /out/addition_train
+COPY out/addition_train /out/addition_train
 RUN chmod +x /out/addition_train
 COPY ./train.sh /train.sh
 RUN chmod +x /train.sh