client: Dockerfiles: remote: root: update multi-stage

Parses out build stage into separate build target.

client/Dockerfiles/remote/root/Dockerfile.archlinux

@@ -15,7 +15,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program. If not, see <https://www.gnu.org/licenses/>.
 
-FROM archlinux:base-devel AS base-devel
+FROM archlinux:base-devel AS root-build
 
 RUN pacman -Syu \
   git \
@@ -85,9 +85,9 @@ RUN PACKAGER="https://gitea.com/EvergreenCrypto/docker-finance" makepkg -s --noc
 # Production stage
 #
 
-FROM archlinux:base
+FROM archlinux:base AS root
 
-COPY --from=base-devel /home/builder/root/root-*.pkg.tar.zst /root/
+COPY --from=root-build /home/builder/root/root-*.pkg.tar.zst /root/
 
 RUN pacman -Syu \
   gcc \

client/Dockerfiles/remote/root/docker-compose.yml

@@ -20,6 +20,16 @@ services:
     image: evergreencrypto/root:archlinux
     container_name: evergreencrypto_root_archlinux
     build:
+      context: .
+      target: root
+      dockerfile: Dockerfile.archlinux
+
+  archlinux-build:
+    image: evergreencrypto/root:archlinux-build
+    container_name: evergreencrypto_root_archlinux-build
+    build:
+      context: .
+      target: root-build
       dockerfile: Dockerfile.archlinux
 
 # vim: sw=2 sts=2 si ai et