my $imageContent = do {
  open (my $IN, "<", $image) or die "Error in reading '$image': $!";
  binmode($IN);
  local $/; # defaults to undef
  <$IN>; # close happens automatically at end of block if
         # you use a lexical variable as filehandle
}; # do

open (my $OUT, ">", $outfile) 
  or die "Error: couldn't write '$outfile': $!\n";
binmode($OUT); # thanks to pKai
print $OUT $imageContent;
close($OUT) or die "Error: couldn't close '$outfile': $!";