Avoid cache problems

Start using the "--output-hashing all" option when building to avoid
cache problems in browser.

Also introduce a production build to use when building the docker image.

Issue-ID: NONRTRIC-529
Signed-off-by: elinuxhenrik <henrik.b.andersson@est.tech>
Change-Id: Ic38ecb938076b1b62ee91356035b43bebc1a80cb
diff --git a/webapp-frontend/Dockerfile b/webapp-frontend/Dockerfile
index 30d5c2c..c4a07d2 100644
--- a/webapp-frontend/Dockerfile
+++ b/webapp-frontend/Dockerfile
@@ -28,7 +28,7 @@
 ENV CHROME_BIN /usr/bin/chromium-browser
 RUN ./ng test --browsers ChromeHeadless --code-coverage=true --watch=false
 
-RUN npm run-script build
+RUN npm run-script build:prod
 
 ### STAGE 2: Run App ###
 FROM nginx:alpine