Merge pull request #4 from onaio/update-base-image

Update base image to use latest alpine

Dockerfile

@@ -1,5 +1,5 @@
 # adapted from https://nodejs.org/en/docs/guides/nodejs-docker-webapp/
-FROM node:20.2-alpine
+FROM node:20.11.1-alpine3.19
 WORKDIR /usr/src/app
 COPY package*.json ./
 RUN npm ci --only=production