Introduce THELOUNGE_REPOSITORY to specify upstream repository to compile from

Dockerfile

@@ -1,5 +1,6 @@
 FROM node:lts-alpine
 
+ARG THELOUNGE_REPOSITORY=git+https://github.com/thelounge/thelounge.git
 ARG THELOUNGE_VERSION=4.4.1-rc.2
 
 LABEL org.opencontainers.image.title "Official The Lounge image"
@@ -20,14 +21,18 @@ ENV PORT 9000
 EXPOSE ${PORT}
 
 ENTRYPOINT ["docker-entrypoint.sh"]
-CMD ["thelounge", "start"]
+WORKDIR /src/thelounge
+CMD ["yarn", "start"]
 
 COPY docker-entrypoint.sh /usr/local/bin/docker-entrypoint.sh
 
 # Install thelounge.
 RUN apk --update --no-cache --virtual build-deps add python3 build-base git && \
     ln -sf python3 /usr/bin/python && \
-    yarn --non-interactive --frozen-lockfile global add thelounge@${THELOUNGE_VERSION} && \
+    git clone "${THELOUNGE_REPOSITORY}" /src/thelounge && \
+    cd /src/thelounge && git reset --hard "${THELOUNGE_VERSION}" && \
+    yarn --non-interactive --frozen-lockfile install --production=false && \
+    yarn --non-interactive build && \
     yarn --non-interactive cache clean && \
     apk del --purge build-deps && \
     rm -rf /root/.cache /tmp /usr/bin/python

docker-compose.yml

@@ -1,7 +1,8 @@
 version: '2'
 services:
   thelounge:
-    image: ghcr.io/thelounge/thelounge:latest
+    build:
+      context: ./
     container_name: thelounge
     ports:
       - "9000:9000"