Hardening of the Backend docker image (#379)

* Add script to build the backend
* harden the backend docker image
* fix docker-compose
* fix doc

scripts/build-docker-backend.sh

@@ -0,0 +1,28 @@
+#!/usr/bin/env bash
+
+pushd "$(git rev-parse --show-toplevel)/backend" > /dev/null
+
+while getopts ":Nsgapv:" arg; do
+  case "${arg}" in
+    p)
+      PUBLISH="true"
+      ;;
+  esac
+done
+
+IMAGE=substrate-telemetry-backend
+DOCKER_USER=${DOCKER_USER:-paritytech}
+echo "Building $IMAGE as $DOCKER_USER"
+
+docker build -t $IMAGE -f ./Dockerfile .
+docker tag $IMAGE $DOCKER_USER/$IMAGE
+
+if [[ "$PUBLISH" = 'true' ]]; then
+    docker push $DOCKER_USER/$IMAGE
+else
+    echo 'No -p passed, skipping publishing to docker hub'
+fi
+
+popd > /dev/null
+
+docker images | grep $IMAGE

scripts/build-docker-frontend.sh

@@ -15,7 +15,8 @@ IMAGE=substrate-telemetry-frontend
 DOCKER_USER=${DOCKER_USER:-paritytech}
 echo "Publishing $IMAGE as $DOCKER_USER"
 
-docker build -t $DOCKER_USER/$IMAGE -f ./Dockerfile .
+docker build -t $IMAGE -f packages/frontend/Dockerfile .
+docker tag $IMAGE $DOCKER_USER/$IMAGE
 
 if [[ "$PUBLISH" = 'true' ]]; then
     docker push $DOCKER_USER/$IMAGE