switch to distroless image

Dockerfile

@@ -1,25 +1,16 @@
-FROM ubuntu:22.04
+FROM node:20 AS build-env
+WORKDIR /app
 
-RUN apt-get update \
-  && apt-get upgrade -y \
-  && apt-get --no-install-recommends -y install nodejs npm curl \
-  && apt-get clean \
-  && rm -rf /var/lib/apt/lists/* \
-  && nodejs -v \
-  && npm -v
-WORKDIR /usr/src/app
 COPY package.json .
 COPY package-lock.json .
 RUN npm ci
 COPY db db/
 COPY srv srv/
-COPY srv/gen/srv/csn.json srv/
+#COPY srv/gen/srv/csn.json srv/
 COPY app app/
 
+FROM gcr.io/distroless/nodejs20-debian12
+COPY --from=build-env /app /app
+WORKDIR /app
 EXPOSE 4004
-HEALTHCHECK --interval=5m --timeout=3s \
-  CMD curl -f http://localhost:4004/ || exit 1
-RUN groupadd --gid 1000 node \
-  && useradd --uid 1000 --gid node --shell /bin/bash --create-home node
-USER node
 CMD [ "npm", "start" ]