[YUNIKORN-964] upgrade image base to 1.21.4-alpine (#66)

* [YUNIKORN-964] upgrade image base to 1.21.4-alpine

Fix vulnerabilities in the base image by moving to later version.

* additional node upgrades from angular

* downgrade node version

karma does not run on node v15 and later need to move back to node v14.

.github/workflows/main.yaml

@@ -21,7 +21,7 @@ jobs:
  - name: Set Node.js Environment
  uses: actions/setup-node@v2
  with:
- node-version: 12.14
+ node-version: 14.18
  - run: |
  npm install -g @angular/cli > /dev/null
  npm install karma
@@ -38,4 +38,4 @@ jobs:
  run: ng build --prod
 
  - name: Test Coverage
- run: yarn test:coverage
+ run: yarn test:coverage

Dockerfile

@@ -16,7 +16,7 @@
 # limitations under the License.
 
 # State 1
-FROM node:12.13.1-alpine as buildstage
+FROM node:14.18-alpine3.14 as buildstage
 
 WORKDIR /usr/uiapp
 
@@ -29,7 +29,7 @@ RUN yarn install
 RUN yarn build:prod
 
 # Stage 2
-FROM nginx:1.18.0-alpine
+FROM nginx:1.21.4-alpine
 
 COPY --from=buildstage /usr/uiapp/dist/yunikorn-web /usr/share/nginx/html