Everything for docker/docker compose done

At least the skeleton which is good enough for now, the flesh can be
filled out by us in a sec including ports for caddy reverse proxy

src/client/Dockerfile

@@ -0,0 +1,31 @@
+FROM alpine:3.21
+
+RUN mkdir /client
+
+RUN apk add bash curl file git unzip which zip gcompat wget tar xz
+
+ENTRYPOINT bash
+
+WORKDIR /client
+
+RUN wget -O flutter.tar.xz https://storage.googleapis.com/flutter_infra_release/releases/stable/linux/flutter_linux_3.29.0-stable.tar.xz
+
+RUN tar xf flutter.tar.xz
+
+RUN echo `ls`
+
+ENV PATH="/client/flutter/bin/:${PATH}"
+
+RUN git config --global --add safe.directory /client/flutter
+
+RUN flutter upgrade
+
+RUN flutter doctor
+
+COPY ./* /client/
+
+RUN flutter build web
+
+WORKDIR /client/build/web
+
+CMD ["dart", "run", "dhttpd"]

src/docker-compose.yml

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+
+version: "3"
+services:
+  client:
+    build: ./client
+  server:
+    build: ./client
+  rev_proxy:
+    build: ./reverse-proxy

src/reverse-proxy/Dockerfile

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+FROM caddy:2.9-alpine
+
+COPY Caddyfile /etc/caddy/Caddyfile

src/server/Dockerfile

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+FROM node:23.8-alpine3.20
+
+COPY . /srv
+
+CMD ["node", "index.js"]