Pre-bake some vars and change telemetry handling

frontend/Dockerfile

@@ -1,3 +1,6 @@
+ARG POSTHOG_HOST=https://app.posthog.com
+ARG POSTHOG_API_KEY=posthog-api-key
+
 FROM node:16-alpine AS deps
 # Install dependencies only when needed. Check https://github.com/nodejs/docker-node/tree/b4117f9333da4138b03a546ec926ef50a31506c3#nodealpine to understand why libc6-compat might be needed.
 # RUN apk add --no-cache libc6-compat
@@ -19,23 +22,34 @@ COPY --from=deps /app/node_modules ./node_modules
 # Copy all files 
 COPY . .
 
+ENV NODE_ENV production
+ENV NEXT_PUBLIC_ENV production
+ARG POSTHOG_HOST
+ENV NEXT_PUBLIC_POSTHOG_HOST $POSTHOG_HOST
+ARG POSTHOG_API_KEY
+ENV NEXT_PUBLIC_POSTHOG_API_KEY $POSTHOG_API_KEY
+
 # Build
 RUN npm run build
 
 
-# Production image, copy all the files and run next
+# Production image
 FROM node:16-alpine AS runner
 WORKDIR /app
 
-ENV NODE_ENV production
-
 RUN addgroup --system --gid 1001 nodejs
 RUN adduser --system --uid 1001 nextjs
 
-COPY --from=builder /app/public ./public
+RUN mkdir -p /app/.next/cache/images && chown nextjs:nodejs /app/.next/cache/images
+VOLUME /app/.next/cache/images
 
-# Automatically leverage output traces to reduce image size
-# https://nextjs.org/docs/advanced-features/output-file-tracing
+ARG POSTHOG_API_KEY
+ENV NEXT_PUBLIC_POSTHOG_API_KEY=$POSTHOG_API_KEY \
+    BAKED_NEXT_PUBLIC_POSTHOG_API_KEY=$POSTHOG_API_KEY
+
+COPY --chown=nextjs:nodejs --chmod=555 scripts ./scripts
+COPY --from=builder /app/public ./public
+RUN chown nextjs:nodejs ./public/data
 COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
 COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static
 
@@ -44,6 +58,7 @@ USER nextjs
 EXPOSE 3000
 
 ENV PORT 3000
+ENV NEXT_TELEMETRY_DISABLED 1
 
 
-CMD ["node", "server.js"]
+CMD ["/app/scripts/start.sh"]