yarn cache (node_modules) directory should already exist, so yarn install should be a noop.

.github/workflows/build.yaml

@@ -24,16 +24,15 @@ jobs:
     steps:
       - name: Checkout repository
         uses: actions/checkout@v2
-#      - name: "Populate frontend version information"
-#        run: "cd webapp/frontend && ./git.version.sh"
-#      - name: "Generate frontend & version information"
-#        uses: addnab/docker-run-action@v3
-#        with:
-#          image: node:lts
-#          options: -v ${{ github.workspace }}:/work
-#          run: |
-#            cd /work
-#            make binary-frontend && echo "print contents of /work/dist" && ls -alt /work/dist
+      - name: Set Node.js 18.x
+        uses: actions/setup-node@v3
+        with:
+          node-version: 18.x
+      - name: Create Yarn Cache
+        run: |
+          cd frontend
+          yarn install --frozen-lockfile
+
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v2
         with:

Dockerfile

@@ -4,16 +4,10 @@
 FROM node:18 as frontend-build
 ARG FASTEN_ENV=sandbox
 WORKDIR /usr/src/fastenhealth/frontend
-COPY frontend/package.json frontend/yarn.lock ./
-
-RUN yarn --version && \
-    yarn config delete proxy && \
-    yarn config delete https-proxy && \
-    yarn config set registry 'http://registry.npmjs.org' && \
-    yarn config list && \
-    yarn install
 COPY frontend/ ./
-RUN yarn run build -- --configuration ${FASTEN_ENV} --output-path=../dist
+
+RUN yarn install --frozen-lockfile && \
+    yarn run build -- --configuration ${FASTEN_ENV} --output-path=../dist
 
 #########################################################################################################
 # Backend Build