install nodejs and yarn in alpine containers (microsoft#36)

Author: joaomoreno

alpine-arm64/Dockerfile

@@ -1,6 +1,9 @@
-FROM arm64v8/alpine:3.16
+ARG REPO=alpine
+ARG TAG=3.16
+FROM arm64v8/${REPO}:${TAG}
 
-RUN apk add g++ python3 make git bash curl perl pkgconfig libsecret-dev && uname -m
+RUN apk add nodejs npm g++ python3 make git bash curl perl pkgconfig libsecret-dev
+RUN npm install -g yarn
 
 RUN mkdir -p /root/vscode
 WORKDIR /root/vscode

alpine-x64/Dockerfile

@@ -2,7 +2,8 @@ ARG REPO=alpine
 ARG TAG=3.16
 FROM ${REPO}:${TAG}
 
-RUN apk add g++ python3 make git bash curl perl pkgconfig libsecret-dev
+RUN apk add nodejs npm g++ python3 make git bash curl perl pkgconfig libsecret-dev
+RUN npm install -g yarn
 
 RUN mkdir -p /root/vscode
 WORKDIR /root/vscode