feat(docker-stack): add archmirror stack

docker/stacks/archmirror/stack.env

@@ -0,0 +1,14 @@
+# Mirror Configuration
+MIRROR_URL=
+SYNC_SCHEDULE=0 */6 * * *
+RSYNC_EXTRA_OPTIONS=--info=progress2
+
+# HTTP Configuration
+HTTP_PORT=8080
+NGINX_WORKERS=auto
+
+# Path Configuration
+ARCHLINUX_VOLUME_PATH=
+
+# Basic Configuration
+TZ=UTC