make Huppy deployable (again) (#2632)

New Next requires a minor Node update. Bumped it _just for this
container_ (ugh), and between the update and new Yarn `yarn workspaces
focus` works and the container builds just fine with Fly CLI. The
Dockerfile hack is now removed.

### Change Type

- [x] `internal` — Any other changes that don't affect the published
package

apps/huppy/Dockerfile

@@ -1,5 +1,5 @@
 # Install dependencies only when needed
-FROM node:18.12.1-alpine AS builder
+FROM node:18.17.0-alpine AS builder
 # 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
 
@@ -8,7 +8,7 @@ WORKDIR /app
 COPY . .
 
 RUN --mount=type=cache,target=/root/.yarn YARN_CACHE_FOLDER=/root/.yarn \
-    yarn install --immutable
+    yarn workspaces focus @tldraw/monorepo huppy
 
 ENV NEXT_TELEMETRY_DISABLED 1
 
@@ -16,7 +16,7 @@ WORKDIR /app/apps/huppy
 RUN --mount=type=cache,target=/root/.yarn YARN_CACHE_FOLDER=/root/.yarn yarn build
 
 # Production image, copy all the files and run next
-FROM node:18.12.1-alpine AS runner
+FROM node:18.17.0-alpine AS runner
 
 RUN apk update && apk upgrade && \
     apk add --no-cache bash git openssh

apps/huppy/hacky.Dockerfile

@@ -1,12 +0,0 @@
-# this is extremely hacky and will only work for this one time :)
-
-# it seems that fly.io CLI somehow builds the image differently from
-# pure docker and just hangs, consuming one full core; so instead of
-# building and deploying, build separately through docker and then
-# just reuse the image
-# current workflow:
-# docker build --progress plain -f apps/huppy/Dockerfile -t dgroshev/huppy --platform linux/amd64 .
-# docker push dgroshev/huppy
-# [adjust the image hash below]
-# fly deploy --config apps/huppy/fly.toml --dockerfile apps/huppy/hacky.Dockerfile --local-only
-FROM dgroshev/huppy@sha256:3dd947e860cb919ba8b5147f51b286ee413057c12bc973d021fbe8313f28401c