remove explicit chown step that made docker image bigger

[captncraig]

Before (v1.1): 544MB (according to docker desktop)

# ls -la /bin/alloy
-rwxr-xr-x 1 alloy alloy 228652376 May 30 14:17 /bin/alloy
# ls -la /var/lib/alloy
total 12
drwxrwx--- 1 alloy alloy 4096 May 30 14:17 .
drwxr-xr-x 1 root  root  4096 May 30 14:17 ..
drwxrwx--- 1 alloy alloy 4096 May 30 14:17 data
# ls -la /etc/alloy
total 12
drwxr-xr-x 1 alloy alloy 4096 May 30 14:17 .
drwxr-xr-x 1 root  root  4096 Jun 21 15:27 ..
-rw-r--r-- 1 alloy alloy  748 May 30 14:13 config.alloy

After: 408MB

# ls -la /bin/alloy
-rwxr-xr-x 1 alloy alloy 321554776 Jun 21 15:32 /bin/alloy
# ls -la /var/lib/alloy
total 20
drwxrwx--- 1 alloy alloy 4096 Jun 21 15:21 .
drwxr-xr-x 1 root  root  4096 Jun 21 15:21 ..
drwxrwx--- 1 alloy alloy 4096 Jun 21 15:21 data
# ls -la /etc/alloy
total 12
drwxr-xr-x 2 alloy alloy 4096 Jun 21 15:21 .
drwxr-xr-x 1 root  root  4096 Jun 21 15:23 ..
-rw-rw-r-- 1 alloy alloy  748 Mar 29 03:34 config.alloy

It isn't a massive improvement, but it is something for free.

[captncraig]

Fixes #1096