fix: update Docker container to node v12

Author: kyleratti

build/web.Dockerfile

@@ -1,12 +1,14 @@
-FROM node:10-alpine AS app-build
+FROM node:12-alpine AS app-build
+RUN apk add --no-cache python make alpine-sdk
 RUN mkdir -p /app-src
 WORKDIR /app-src
 COPY src/ /app-src/src/
 COPY package.json /app-src/
 RUN npm install --no-package-lock
 RUN npm run build
 
-FROM node:10-alpine AS app-runtime
+FROM node:12-alpine AS app-runtime
+RUN apk add --no-cache python make alpine-sdk
 RUN mkdir /app
 COPY --from=app-build /app-src/node_modules/ /app/node_modules/
 COPY --from=app-build /app-src/lib/ /app/lib/