build-docker.sh: Some small improvements for parameter handling

Dockerfile

@@ -34,7 +34,7 @@ RUN dpkg -i /tmp/prosody.deb \
     && perl -i -pe 'BEGIN{undef $/;} s/^log = {.*?^}$/log = {\n    {levels = {min = "info"}, to = "console"};\n}/smg' /etc/prosody/prosody.cfg.lua
 
 COPY ./entrypoint.sh /entrypoint.sh
-RUN chmod +x /entrypoint.sh
+RUN chmod 755 /entrypoint.sh
 ENTRYPOINT ["/entrypoint.sh"]
 
 EXPOSE 80 443 5222 5269 5347 5280 5281

build-docker.sh

@@ -1,4 +1,4 @@
-# /bin/bash
+#!/bin/bash
 
 if [[ -z "$1" ]]; then
     echo "Usage: ./build-docker.sh def_file_name version_number"
@@ -11,18 +11,18 @@ if [[ -z "$2" ]]; then
 fi
 
 echo "Starting build..."
-cp $1 ./prosody.deb
-docker build -t prosody/prosody:$2 .
+cp "$1" ./prosody.deb
+docker build -t prosody/prosody:"$2" .
 for i in "${@:3}"; do
   echo "Also building tag $i"
-  docker build -t prosody/prosody:$i .
+  docker build -t prosody/prosody:"$i" .
 done
 docker push prosody/prosody
 
 echo "Cleaning up..."
-docker rmi prosody/prosody:$2
+docker rmi prosody/prosody:"$2"
 for i in "${@:3}"; do
   echo "Also cleaning tag $i"  
-  docker rmi prosody/prosody:$i
+  docker rmi prosody/prosody:"$i"
 done
 rm ./prosody.deb