Updated to new base Arch image, and changed version to 1.4.1

Docker/Dockerfile

@@ -2,12 +2,9 @@
 # Description: Docker build intended to replicate the FPaDSim environment
 #	  created by Sergei Chekanov
 
-FROM dbcooper/arch:2017-05-02
+FROM dbcooper/arch:2017-09-08
 
 # Set up basic environment
-RUN pacman-key --init && \
-	pacman-key --refresh-keys
-
 RUN pacman -S --noconfirm \
 		sed \
 		sudo
@@ -307,5 +304,5 @@ RUN sudo pacman -S --noconfirm \
 		vim
 
 # FPaDSim Version
-ENV FPADSIM_VERSION 1.5-prerelease
+ENV FPADSIM_VERSION 1.4.1-prerelease