move frontend compile into runtime task

.devcontainer/Dockerfile

@@ -1,23 +1,5 @@
 # syntax=docker/dockerfile:1
-# https://github.com/moby/buildkit/blob/master/frontend/dockerfile/docs/reference.md
 
-# Stage: compile-frontend
-# Purpose: Compiles the frontend
-# Notes:
-#  - Does NPM stuff with Typescript and such
-FROM --platform=$BUILDPLATFORM docker.io/node:20-bookworm-slim AS compile-frontend
-
-COPY ./src-ui /src/src-ui
-
-WORKDIR /src/src-ui
-RUN set -eux \
-  && npm update npm -g \
-  && npm ci
-RUN set -eux \
-  && ./node_modules/.bin/ng build --configuration production
-
-# Stage: main-app
-# Purpose: The final image
 FROM --platform=$BUILDPLATFORM docker.io/node:20-bookworm-slim as main-app
 
 ARG DEBIAN_FRONTEND=noninteractive
@@ -178,10 +160,8 @@ RUN --mount=type=cache,target=/root/.cache/pip/,id=pip-cache \
     && apt-get update \
     && apt-get install --yes --quiet ${BUILD_PACKAGES}
 
-WORKDIR /usr/src/paperless/paperless-ngx/
-
-# copy frontend
-COPY --from=compile-frontend --chown=1000:1000 /src/src/documents/static ./src/documents/static
+RUN set -eux \
+  && npm update npm -g
 
 # add users, setup scripts
 # Mount the compiled frontend to expected location

.devcontainer/docker-compose.devcontainer.sqlite-tika.yml

@@ -69,7 +69,7 @@ services:
       PAPERLESS_DEBUG: true
 
     # Overrides default command so things don't shut down after the process ends.
-    command: /bin/sh -c "while sleep 1000; do :; done"
+    command: /bin/sh -c "chown -R paperless:paperless /usr/src/paperless/paperless-ngx/src/documents/static/frontend && while sleep 1000; do :; done"
 
   gotenberg:
     image: docker.io/gotenberg/gotenberg:7.8

.devcontainer/vscode/tasks.json

@@ -56,10 +56,28 @@
 			"cwd": "${workspaceFolder}/src"
 		}
 	  },
+	  {
+		"label": "compile frontend",
+		"type": "shell",
+		"command": "npm ci && ./node_modules/.bin/ng build --configuration production",
+		"group": "none",
+		"presentation": {
+			"echo": true,
+			"reveal": "always",
+			"focus": true,
+			"panel": "shared",
+			"showReuseMessage": false,
+			"clear": true,
+			"revealProblems": "onProblem"
+		},
+		"options": {
+			"cwd": "${workspaceFolder}/src-ui"
+		}
+	  },
 	  {
 		"label": "Maintenance: recreate .venv",
 		"type": "shell",
-		"command": "rm -R -v .venv/* && pipenv install --dev",
+		"command": "rm -R -v .venv/* || pipenv install --dev",
 		"group": "none",
 		"presentation": {
 			"echo": true,