chore: consolidate app compose dev and prod

Dockerfile

@@ -1,12 +1,17 @@
 FROM node:20 AS builder
 WORKDIR /app
 COPY package*.json ./
-# TODO: Remove this or review embedded variables
-COPY .env .env
 
 # First generate package-lock.json if it doesn't exist, then do clean install
 RUN if [ ! -f package-lock.json ]; then npm install --package-lock-only; fi && npm ci
+
 COPY . .
+
+# Vite bakes VITE_* values at build time, so compose must choose the env file
+# during image build, not only at container runtime.
+ARG ENV_FILE=.env
+COPY ${ENV_FILE} .env
+
 # Run build with production mode
 RUN npm run build -- --mode production