diff --git a/Dockerfile b/Dockerfile
index f91ebff..65f40e9 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,35 +2,39 @@ FROM alpine
 MAINTAINER David Personette <dperson@gmail.com>
 
 # Install samba
-RUN apk --no-cache add bash samba shadow && \
+RUN apk --no-cache --no-progress add bash samba shadow && \
     adduser -D -G users -H -g 'Samba User' -h /tmp smbuser && \
-    sed -i 's|^\(   log file = \).*|\1/dev/stdout|' /etc/samba/smb.conf && \
-    sed -i 's|^\(   load printers = \).*|\1no|' /etc/samba/smb.conf && \
-    sed -i 's|^\(   printcap name = \).*|\1/dev/null|' /etc/samba/smb.conf && \
-    sed -i 's|^;*\(   printing = \).*|\1bsd|' /etc/samba/smb.conf && \
-    sed -i 's|^\(   unix password sync = \).*|\1no|' /etc/samba/smb.conf && \
-    sed -i '/Share Definitions/,$d' /etc/samba/smb.conf && \
-    echo '   pam password change = yes' >>/etc/samba/smb.conf && \
-    echo '   map to guest = bad user' >>/etc/samba/smb.conf && \
-    echo '   usershare allow guests = yes' >>/etc/samba/smb.conf && \
-    echo '   create mask = 0664' >>/etc/samba/smb.conf && \
-    echo '   force create mode = 0664' >>/etc/samba/smb.conf && \
-    echo '   directory mask = 0775' >>/etc/samba/smb.conf && \
-    echo '   force directory mode = 0775' >>/etc/samba/smb.conf && \
-    echo '   force user = smbuser' >>/etc/samba/smb.conf && \
-    echo '   force group = users' >>/etc/samba/smb.conf && \
-    echo '   follow symlinks = yes' >>/etc/samba/smb.conf && \
-    echo '   load printers = no' >>/etc/samba/smb.conf && \
-    echo '   printing = bsd' >>/etc/samba/smb.conf && \
-    echo '   printcap name = /dev/null' >>/etc/samba/smb.conf && \
-    echo '   disable spoolss = yes' >>/etc/samba/smb.conf && \
-    echo '   socket options = TCP_NODELAY' >>/etc/samba/smb.conf && \
-    echo '   strict locking = no' >>/etc/samba/smb.conf && \
-    echo '   vfs objects = recycle' >>/etc/samba/smb.conf && \
-    echo '   recycle:keeptree = yes' >>/etc/samba/smb.conf && \
-    echo '   recycle:versions = yes' >>/etc/samba/smb.conf && \
-    echo '   min protocol = SMB2' >>/etc/samba/smb.conf && \
-    echo '' >>/etc/samba/smb.conf && \
+    file="/etc/samba/smb.conf" && \
+    sed -i 's|^;* *\(log file = \).*|   \1/dev/stdout|' $file && \
+    sed -i 's|^;* *\(load printers = \).*|   \1no|' $file && \
+    sed -i 's|^;* *\(printcap name = \).*|   \1/dev/null|' $file && \
+    sed -i 's|^;* *\(printing = \).*|   \1bsd|' $file && \
+    sed -i 's|^;* *\(unix password sync = \).*|   \1no|' $file && \
+    sed -i 's|^;* *\(preserve case = \).*|   \1yes|' $file && \
+    sed -i 's|^;* *\(short preserve case = \).*|   \1yes|' $file && \
+    sed -i 's|^;* *\(default case = \).*|   \1lower|' $file && \
+    sed -i '/Share Definitions/,$d' $file && \
+    echo '   pam password change = yes' >>$file && \
+    echo '   map to guest = bad user' >>$file && \
+    echo '   usershare allow guests = yes' >>$file && \
+    echo '   create mask = 0664' >>$file && \
+    echo '   force create mode = 0664' >>$file && \
+    echo '   directory mask = 0775' >>$file && \
+    echo '   force directory mode = 0775' >>$file && \
+    echo '   force user = smbuser' >>$file && \
+    echo '   force group = users' >>$file && \
+    echo '   follow symlinks = yes' >>$file && \
+    echo '   load printers = no' >>$file && \
+    echo '   printing = bsd' >>$file && \
+    echo '   printcap name = /dev/null' >>$file && \
+    echo '   disable spoolss = yes' >>$file && \
+    echo '   socket options = TCP_NODELAY' >>$file && \
+    echo '   strict locking = no' >>$file && \
+    echo '   vfs objects = recycle' >>$file && \
+    echo '   recycle:keeptree = yes' >>$file && \
+    echo '   recycle:versions = yes' >>$file && \
+    echo '   min protocol = SMB2' >>$file && \
+    echo '' >>$file && \
     rm -rf /tmp/*
 
 COPY samba.sh /usr/bin/
diff --git a/samba.sh b/samba.sh
index f8cdd90..7c55553 100755
--- a/samba.sh
+++ b/samba.sh
@@ -38,10 +38,10 @@ charmap() { local chars="$1" file=/etc/samba/smb.conf
 #   option) raw option
 # Return: line added to smb.conf (replaces existing line with same key)
 global() { local key="${1%%=*}" value="${1#*=}" file=/etc/samba/smb.conf
-    if grep -qE '^\s*'"$key" "$file"; then
-        sed -i 's|^\s*'"$key"'.*|   '"$key = $value"'|' "$file"
+    if grep -qE '^;*\s*'"$key" "$file"; then
+        sed -i 's|^;*\s*'"$key"'.*|   '"${key% } = ${value# }"'|' "$file"
     else
-        sed -i '/\[global\]/a \   '"$key = $value" "$file"
+        sed -i '/\[global\]/a \   '"${key% } = ${value# }" "$file"
     fi
 }