Fix Docker build (#2815)

Close #2814

Dockerfile

@@ -8,14 +8,18 @@ WORKDIR /usr/src/app
 
 ARG NODE_ENV
 ENV NODE_ENV $NODE_ENV
-COPY package.json /usr/src/app/
+
+COPY package.json package-lock.json /usr/src/app/
+# Without the gh-badges package.json and CLI script in place, `npm install` will fail.
+COPY gh-badges /usr/src/app/gh-badges/
 RUN npm install
+
 COPY . /usr/src/app
 RUN npm run build
 RUN npm prune --production
 RUN npm cache clean --force
 
 # Do we need to list the environment variables here?
-node server
+CMD node server
 
 EXPOSE 80