Reduce federation-server Docker image

Dockerfile

@@ -95,8 +95,6 @@ ENV BASE_URL= \
 
 COPY --from=1 /usr/src/app /usr/src/app/
 
-RUN ls -l /usr/src/app
-
 WORKDIR /usr/src/app
 
 EXPOSE 3000

packages/federated-identity-service/Dockerfile

@@ -1,4 +1,45 @@
-FROM node:18
+# Base for final image
+FROM debian:bookworm-slim as node-minimal
+
+RUN apt update && \
+    apt -y dist-upgrade && \
+    apt -y install nodejs && \
+    apt autoremove -y && \
+    apt clean && \
+    rm -rf /var/lib/apt/lists/*
+
+# Temporary image to build app
+FROM debian:bookworm-slim as builder
+
+RUN apt update && \
+    apt -y dist-upgrade && \
+    apt -y install nodejs npm && \
+    apt autoremove -y && \
+    apt clean && \
+    rm -rf /var/lib/apt/lists/*
+
+WORKDIR /usr/src/app
+
+# COPIES
+COPY ./packages/federated-identity-service/server.mjs .
+COPY ./packages/crypto ./packages/crypto
+COPY ./packages/logger ./packages/logger
+COPY ./packages/matrix-resolve ./packages/matrix-resolve
+COPY ./packages/matrix-identity-server ./packages/matrix-identity-server
+COPY ./packages/config-parser ./packages/config-parser
+COPY ./packages/federated-identity-service ./packages/federated-identity-service
+COPY .husky .husky
+COPY lerna.json ./
+COPY tsconfig-build.json ./
+COPY rollup-template.js ./
+COPY package*.json ./
+
+RUN npm install && npm run build && \
+    rm -rf node_modules */*/node_modules && \
+    npm install --production --ignore-scripts && \
+    npm cache clean --force
+
+FROM node-minimal as federation-server
 
 ENV BASE_URL= \
     CRON_SERVICE= \
@@ -24,25 +65,9 @@ ENV BASE_URL= \
     TRUST_X_FORWARDED_FOR= \
     TRUSTED_SERVERS_ADDRESSES=
 
-RUN apt update && apt -y dist-upgrade
+COPY --from=1 /usr/src/app /usr/src/app/
 
 WORKDIR /usr/src/app
 
-COPY ./packages/federated-identity-service/server.mjs .
-
-COPY ./packages/crypto ./packages/crypto
-COPY ./packages/logger ./packages/logger
-COPY ./packages/matrix-resolve ./packages/matrix-resolve
-COPY ./packages/matrix-identity-server ./packages/matrix-identity-server
-COPY ./packages/config-parser ./packages/config-parser
-COPY ./packages/federated-identity-service ./packages/federated-identity-service
-COPY .husky .husky
-COPY lerna.json ./
-COPY tsconfig-build.json ./
-COPY rollup-template.js ./
-COPY package*.json ./
-
-RUN npm install && npm run build && npm cache clean --force
-
 EXPOSE 3000
-CMD [ "node", "/usr/src/app/server.mjs" ]
+CMD [ "node", "/usr/src/app/server.mjs" ]