The original docker implementation is idiotic, this is not

.dockerignore

@@ -0,0 +1 @@
+config/

.gitignore

@@ -7,3 +7,4 @@ package-lock.json
 coverage/
 public/
 dist/
+config/

Dockerfile

@@ -0,0 +1,14 @@
+FROM node:lts-alpine
+RUN apk add --no-cache --virtual=build-dependencies build-base git python3-dev
+RUN apk add --no-cache yarn
+USER node
+WORKDIR /var/opt/thelounge-src
+ENV THELOUNGE_HOME /var/opt/thelounge
+RUN git clone https://git.supernets.org/supernets/thelounge.git .
+RUN yarn install
+RUN NODE_ENV=production yarn build
+RUN yarn link
+RUN yarn --non-interactive cache clean
+RUN ln -s /var/opt/thelounge-src/index.js /var/opt/thelounge-src/thelounge
+EXPOSE 9000
+CMD ["/var/opt/thelounge-src/thelounge", "start"]

docker-compose.yml

@@ -0,0 +1,7 @@
+services:
+  thelounge:
+    image: git.supernets.org/supernets/thelounge:4.4.1.1
+    ports:
+      - "9000:9000"
+    volumes:
+      - "$PWD/config:/var/opt/thelounge"