Fix issues when building via the chroot_build.sh script. (AppImage#80)

- Remove dependency on sudo when already running as root - not
  available in all environments.

- Remove unnecessary use of `find` to copy build artifacts as
  build-runtime.sh already puts them in a known place and the find
  command chokes under the current Ubuntu kernel while iterating over
  the /proc/ filesystem.

Co-authored-by: probonopd <[email protected]>
Co-authored-by: TheAssassin <[email protected]>

Author: 3 people

scripts/chroot/chroot_build.sh

@@ -8,6 +8,10 @@ if [ -z "${ALPINE_ARCH}" ]; then
     exit 2
 fi
 
+if [ "$(whoami)" = "root" ]; then
+    alias sudo=
+fi
+
 # build in a temporary directory
 # this makes sure that subsequent runs do not influence each other
 # also makes cleaning up easier: just dump the entire directory
@@ -89,5 +93,5 @@ esac
 
 cd "$repo_root_dir"
 mkdir -p ./out/
-sudo find "$tempdir"/miniroot/ -type f -executable -name "runtime-${appimage_arch}"  -exec cp {} "out/runtime-${appimage_arch}" \;
-sudo find "$tempdir"/miniroot/ -type f -executable -name "runtime-${appimage_arch}.debug"  -exec cp {} "out/runtime-${appimage_arch}.debug" \;
+cp "${tempdir}/miniroot/out/runtime-${appimage_arch}" out/
+cp "${tempdir}/miniroot/out/runtime-${appimage_arch}.debug" out/