Update plasma compose to use build

plasma/docker-compose.yaml

@@ -3,6 +3,8 @@ services:
     image: myvnc/webtop:plasma
     container_name: kdeplasma
     restart: unless-stopped
+    build:
+      context: .
     environment:
       MYVNC_VNCPASS: ${MYVNC_KDEPLASMA_VNCPASS}
     networks:
@@ -26,12 +28,13 @@ services:
     environment:
       MYVNC_CUSTOM_TITLE: ${MYVNC_KDEPLASMA_CUSTOM_TITLE}
       MYVNC_PROXYPATH: ${MYVNC_KDEPLASMA_PROXYPATH}
+      MYVNC_VNCSHARING: false
+
       MYVNC_VNCLISTEN_HOST: kdeplasma
       MYVNC_VNCLISTEN_PORT: 5900
-      MYVNC_VNCSHARING: false
     networks:
       - kdeplasma
 
 networks:
   kdeplasma:
-    external: false
+    external: false