Fix Dockerfile locale to en_US

Author: ryukinix

Dockerfile

@@ -1,5 +1,13 @@
 FROM debian:9
 RUN echo 'export PATH=$HOME/.roswell/bin:$PATH' >> ~/.bashrc
-RUN apt update && apt install -y curl make bzip2 libcurl3-gnutls &&\
-    curl -L -O https://github.com/roswell/roswell/releases/download/v19.3.10.97/roswell_19.3.10.97-1_amd64.deb &&\
+# Set the locale
+RUN apt-get install locales -y
+RUN sed --in-place '/en_US.UTF-8/s/^#//' /etc/locale.gen
+RUN locale-gen en_US.UTF-8
+ENV LANG en_US.UTF-8
+ENV LANGUAGE en_US:en
+ENV LC_ALL en_US.UTF-8
+RUN apt update && apt install -y curl make bzip2 libcurl3-gnutls
+RUN curl -L -O https://github.com/roswell/roswell/releases/download/v19.3.10.97/roswell_19.3.10.97-1_amd64.deb && \
     dpkg -i *.deb && ros && rm *.deb
+