Speed up asset building when developing

core/admin/assets/Dockerfile

@@ -4,13 +4,19 @@ FROM node:16-alpine3.16
 
 WORKDIR /work
 
-COPY content/ ./
+COPY package.json ./
+COPY webpack.config.js ./
 
 RUN set -euxo pipefail \
- && npm config set update-notifier false \
+  ; npm config set update-notifier false \
- && npm install --no-audit --no-fund \
+  ; npm install --no-audit --no-fund \
- && sed -i 's/#007bff/#55a5d9/' node_modules/admin-lte/build/scss/_bootstrap-variables.scss \
+  ; sed -i 's/#007bff/#55a5d9/' node_modules/admin-lte/build/scss/_bootstrap-variables.scss \
- && for l in ca da de:de-DE en:en-GB es:es-ES eu fr:fr-FR he hu is it:it-IT ja nb_NO:no-NB nl:nl-NL pl pt:pt-PT ru sv:sv-SE zh; do \
+  ; mkdir assets \
+  ; for l in ca da de:de-DE en:en-GB es:es-ES eu fr:fr-FR he hu is it:it-IT ja nb_NO:no-NB nl:nl-NL pl pt:pt-PT ru sv:sv-SE zh; do \
       cp node_modules/datatables.net-plugins/i18n/${l#*:}.json assets/${l%:*}.json; \
-    done \
+    done
- && node_modules/.bin/webpack-cli --color
+
+COPY assets/ ./assets/
+
+RUN set -euxo pipefail \
+  ; node_modules/.bin/webpack-cli --color

core/admin/run_dev.sh

@@ -47,14 +47,11 @@ cp -r "${base}"/libs .
 sed -E '/^#/d;s:^FROM system$:FROM system AS base:' "${base}/Dockerfile" >Dockerfile
 
 # assets
-cp -r "${assets}/content" .
+cp "${assets}/package.json" .
+cp -r "${assets}/assets/" .
+awk '/new compress/{f=1}!f{print}/}),/{f=0}' <"${assets}/webpack.config.js" >webpack.config.js
 sed -E '/^#/d;s:^(FROM [^ ]+$):\1 AS assets:' "${assets}/Dockerfile" >>Dockerfile
 
-cat >>Dockerfile <<EOF
-RUN set -euxo pipefail \
-  ; rm -f /work/static/*.gz
-EOF
-
 # admin
 sed -E '/^#/d;/^(COPY|EXPOSE|HEALTHCHECK|VOLUME|CMD) /d; s:^(.* )[^ ]*pybabel[^\\]*(.*):\1true \2:' "${admin}/Dockerfile" >>Dockerfile
 
@@ -107,8 +104,8 @@ for vol in audit.py start.py mailu/ migrations/; do
     volumes+=( --volume "${admin}/${vol}:/app/${vol}" )
 done
 
-for file in "${assets}/content/assets"/*; do
+for file in "${assets}/assets"/*; do
-    [[ "${file}" == */vendor.js ]] && continue
+    [[ ! -f "${file}" || "${file}" == */vendor.js ]] && continue
     volumes+=( --volume "${file}:/app/static/${file/*\//}" )
 done