fix: devnet build with latest sdk (#274)

I was under the assumption that the setup node action creates a .npmrc & .yarnrc file in the working directory, but I was mistaken. To fix this, I added a .npmrc template to the repository, with which I overwrite the .npmrc in the workflow

.github/workflows/aws-dev.yml

@@ -40,6 +40,9 @@ jobs:
     - name: Checkout
       uses: actions/checkout@v1
 
+    - name: set up .npmrc to point to github packages
+      run: mv -f .npmrc.github .npmrc
+
     - name: Configure AWS credentials
       uses: aws-actions/configure-aws-credentials@v1
       with:
@@ -51,13 +54,6 @@ jobs:
       id: login-ecr
       uses: aws-actions/amazon-ecr-login@v1
 
-    - name: set up .npmrc & .yarnrc to connect to github packages
-      uses: actions/setup-node@v1
-      with:
-        node-version: 10
-        registry-url: https://npm.pkg.github.com
-        scope: '@kiltprotocol'
-
     - name: Build, tag, and push image to Amazon ECR
       id: build-image
       env:

.npmrc.github

@@ -0,0 +1,3 @@
+//npm.pkg.github.com/:_authToken=${NODE_AUTH_TOKEN}
+@kiltprotocol:registry=https://npm.pkg.github.com
+always-auth=true

Dockerfile.devnet

@@ -5,7 +5,7 @@ ARG NODE_AUTH_TOKEN
 WORKDIR /app
 
 COPY package.json yarn.lock ./
-COPY .npmrc .yarnrc ./
+COPY .npmrc ./
 RUN yarn upgrade --scope @kiltprotocol --latest
 
 COPY . ./