Standardise npm auth config across projects

.drone.yml

@@ -1,35 +1,21 @@
 pipeline:
 
-  npm_auth:
+  test:
     image: node:8
     secrets:
       - npm_auth_token
-    commands:
-      - echo "_authToken=$${NPM_AUTH_TOKEN}" >> .npmrc
-    when:
-      event: [push, pull_request]
-
-  test:
-    image: node:8
     commands:
       - npm install
       - npm test
     when:
       event: [push, pull_request]
 
-  compile:
-    image: node:8
-    commands:
-      - npm run build
-    when:
-      event: [push, pull_request]
-
   build:
     image: docker:17.09.1
     environment:
       - DOCKER_HOST=tcp://172.17.0.1:2375
     commands:
-      - docker build -t asl .
+      - docker build --build-arg NPM_AUTH_USERNAME=$${NPM_AUTH_USERNAME} --build-arg NPM_AUTH_TOKEN=$${NPM_AUTH_TOKEN} -t asl .
     when:
       branch: master
       event: push
@@ -63,6 +49,8 @@ pipeline:
 
   configure_deploy:
     image: node:8
+    secrets:
+      - npm_auth_token
     commands:
       - mkdir deploy
       - npx kube-cookbook --out deploy
@@ -83,3 +71,7 @@ pipeline:
     when:
       environment: dev
       event: deployment
+
+matrix:
+  NPM_AUTH_USERNAME:
+    - asl

.npmrc

@@ -1 +1,4 @@
 @asl:registry = https://artifactory.digital.homeoffice.gov.uk/artifactory/api/npm/npm-virtual/
+
+//artifactory.digital.homeoffice.gov.uk/artifactory/api/npm/npm-virtual/:username=${NPM_AUTH_USERNAME}
+//artifactory.digital.homeoffice.gov.uk/artifactory/api/npm/npm-virtual/:_password=${NPM_AUTH_TOKEN}

Dockerfile

@@ -1,13 +1,14 @@
 FROM quay.io/ukhomeofficedigital/nodejs-base:v8
 
+ARG NPM_AUTH_USERNAME
+ARG NPM_AUTH_TOKEN
+
 COPY .npmrc /app/.npmrc
 COPY package.json /app/package.json
 COPY package-lock.json /app/package-lock.json
 RUN npm install --production --no-optional
 COPY . /app
 
-RUN rm /app/.npmrc
-
 USER nodejs
 
 CMD node index.js