Refactor .dockerignore and Dockerfile for optimized build context and caching

- Updated .dockerignore to ignore everything by default while allowing necessary files and directories for the Docker build.
- Enhanced Dockerfile to utilize caching for pnpm installation and Turbo build process, improving build performance and efficiency.

.dockerignore

@@ -1,7 +1,17 @@
-node_modules
-.next
-.turbo
-.git
-*.log
+# Ignore everything by default
+*
 
-docker/backups
+# Allow only what the Dockerfile needs
+!package.json
+!pnpm-lock.yaml
+!pnpm-workspace.yaml
+!turbo.json
+!.npmrc
+!apps/web/
+!packages/
+
+# Re-exclude build artifacts that snuck in
+apps/web/.next
+apps/web/node_modules
+packages/*/node_modules
+packages/*/dist

docker/Dockerfile

@@ -15,12 +15,14 @@ RUN turbo prune @advdoors/web --docker
 FROM base AS builder
 COPY --from=pruner /app/out/json/ .
 COPY --from=pruner /app/out/pnpm-lock.yaml ./pnpm-lock.yaml
-RUN pnpm install --frozen-lockfile
+RUN --mount=type=cache,id=pnpm,target=/pnpm/store \
+    pnpm install --frozen-lockfile
 
 # Copy pruned source and build via Turbo
 COPY --from=pruner /app/out/full/ .
 ENV NEXT_TELEMETRY_DISABLED=1
-RUN pnpm turbo build --filter=@advdoors/web
+RUN --mount=type=cache,target=/app/apps/web/.next/cache \
+    pnpm turbo build --filter=@advdoors/web
 
 # Production
 FROM base AS runner