Reorder tenant-ui Dockerfile so dependency layers cache

Signed-off-by: Lucas ONeil <lucasoneil@gmail.com>

Author: loneil

services/tenant-ui/Dockerfile

@@ -1,11 +1,20 @@
 FROM node:24-alpine
 
 WORKDIR /usr/src/app
-COPY . .
+
+# Copy only the dependency manifests first so the npm ci layers
+# stay cached as long as the lockfiles don't change
+COPY package.json package-lock.json ./
+COPY frontend/package.json frontend/package-lock.json ./frontend/
+
 # install backend libs
-RUN npm cache clean --force && npm ci
+RUN npm ci
 # install frontend libs
-RUN cd frontend && npm cache clean --force && npm ci
+RUN cd frontend && npm ci
+
+# Copy in the source - code changes only invalidate layers from here down
+COPY . .
+
 # build backend
 RUN npm run build
 # build frontend
@@ -14,4 +23,4 @@ RUN cd frontend && npm run build
 RUN rm -rf frontend/node_modules
 
 EXPOSE 8080
-CMD [ "node", "--enable-source-maps", "dist/src/index.js" ]
+CMD [ "node", "--enable-source-maps", "dist/src/index.js" ]