fix: default user privilege

Author: hentrymartin

docker/Dockerfile

@@ -1,5 +1,6 @@
 # Use the base image with Node.js
 FROM node:12
+RUN useradd -m -s /bin/bash appuser
 ARG NODE_ENV
 ARG BABEL_ENV
 
@@ -18,6 +19,9 @@ COPY . /challenge-engine-ui
 # Set working directory for future use
 WORKDIR /challenge-engine-ui
 
+RUN chown -R appuser:appuser /challenge-engine-ui
+USER appuser
+
 # Install the dependencies from package.json
 RUN echo "NODE ENV in Docker: $NODE_ENV"
 RUN echo "BABEL ENV in Docker: $BABEL_ENV"

test-automation/Dockerfile

@@ -1,4 +1,5 @@
 FROM node:10.17.0-stretch
+RUN useradd -m -s /bin/bash appuser
 RUN apt update
 RUN apt install sudo
 RUN sudo apt-get update; sudo apt-get install -y openjdk-8-jre openjdk-8-jre-headless openjdk-8-jdk openjdk-8-jdk-headless;
@@ -26,6 +27,8 @@ RUN printf '#!/bin/sh\nXvfb :99 -screen 0 1280x1024x24 &\nexec "$@"\n' > /tmp/en
 
 COPY . /test-automation
 WORKDIR /test-automation
+RUN chown -R appuser:appuser /test-automation
+USER appuser
 RUN npm install
 RUN ./node_modules/.bin/webdriver-manager update --versions.chrome=="$(google-chrome -version)"
 ENTRYPOINT ["/docker-entrypoint.sh"]