Wrap to container, minor improvements

.dockerignore

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+*
+!src
+!config.js
+!LICENSE
+!package.json
+!package-lock.json
+!readme.md

Dockerfile

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+# Build node_modules to avoid installing NPM (additinal container size)
+
+FROM alpine AS stage
+
+WORKDIR /app
+COPY . /app
+
+RUN apk add --update npm=12.15.0-r1
+RUN npm install
+
+# Build aclual container
+
+FROM alpine
+
+COPY . /app
+COPY --from=stage /app/node_modules /app/node_modules
+WORKDIR /app
+
+RUN apk add --update nodejs=12.15.0-r1
+
+EXPOSE 80
+
+ENV APP__ENV_NAME=prod
+CMD node -r esm src/api.js

build.sh

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+#!/bin/sh
+
+HUB=zitros/analytics-saviour
+
+docker build --rm -t image .
+
+if [ $# -eq 1 ]
+  then
+    docker tag image $HUB:$1
+fi
+docker tag image $HUB:latest
+
+docker push $HUB