Fix docker image

Dockerfile

@@ -2,7 +2,7 @@ FROM debian:bullseye-slim AS core
 
 # Build arguments
 ARG EXTRAS="ldap,s3,sentry"
-ARG APP_VERSION=""
+ARG APP_VERSION="==2.10.1.dev0+20220801181456.7ba74939"
 
 # Configure Python to be nice inside Docker and pip to stfu
 ENV PYTHONUNBUFFERED 1
@@ -44,7 +44,8 @@ RUN apt-get -y update && \
 	python3-pip \
 	uwsgi \
 	uwsgi-plugin-python3 \
-	yarnpkg
+	yarnpkg \
+	npm
 
 # Install extra dependencies
 RUN   case ",$EXTRAS," in \
@@ -67,14 +68,16 @@ RUN set -e; \
 EXPOSE 8000
 VOLUME ${ALEKSIS_media__root} ${ALEKSIS_backup__location}
 COPY docker-startup.sh /usr/local/bin/aleksis-docker-startup
+COPY package.json /
+COPY webpack.config.js /
 ENTRYPOINT ["/usr/bin/dumb-init", "--"]
 CMD ["/usr/local/bin/aleksis-docker-startup"]
 
 # Install assets
 FROM core as assets
-RUN eatmydata aleksis-admin yarn install; \
+RUN eatmydata yarnpkg install; \
     eatmydata aleksis-admin write_webpack_entrypoints; \
-    yarn run webpack; \
+    eatmydata yarnpkg run webpack; \
     eatmydata aleksis-admin collectstatic --no-input; \
     rm -rf /usr/local/share/.cache
 
@@ -120,9 +123,9 @@ ONBUILD RUN set -e; \
             if [ -n "$APPS" ]; then \
                 eatmydata pip install $APPS; \
             fi; \
-            eatmydata aleksis-admin yarn install; \
+            eatmydata yarnpkg install; \
             eatmydata aleksis-admin write_webpack_entrypoints; \
-            yarn run webpack; \
+            yarnpkg run webpack; \
             eatmydata aleksis-admin collectstatic --no-input; \
             rm -rf /usr/local/share/.cache; \
             eatmydata apt-get remove --purge -y yarnpkg $BUILD_DEPS; \