Fixed some small bugs. Frontend is now included in the docker image

Dockerfile

@@ -1,26 +1,35 @@
+# Stage 1: Build frontend
+FROM node:18-alpine AS frontend-builder
+RUN apk add --no-cache git
+WORKDIR /app
+RUN git clone https://gitea.sanplex.xyz/Sansan/MusicFrontend.git
+WORKDIR /app/MusicFrontend
+RUN npm install
+RUN npm run build
+# Generate config.js with empty API_HOSTNAME (relative paths)
+RUN echo "window.__RUNTIME_CONFIG__ = { API_HOSTNAME: '' };" > dist/config.js
+
+# Stage 2: Build backend
 FROM golang:1.25-alpine as build_go
 RUN apk add --no-cache curl
-
 WORKDIR /app
-
 COPY go.mod go.sum ./
 RUN go mod download
-
 COPY . .
-
 RUN go install github.com/a-h/templ/cmd/templ@latest
-
 RUN templ generate
-
 RUN go build -o main cmd/main.go
 
-# Stage 2, distribution container
+# Stage 3: Final image
 FROM golang:1.25-alpine
 EXPOSE 8080
 VOLUME /sorted
-VOLUME /frontend
 VOLUME /characters
 
+COPY --from=build_go /app/main .
+COPY --from=frontend-builder /app/MusicFrontend/dist /frontend
+COPY ./songs/ ./songs/
+
 ENV PORT 8080
 ENV DB_HOST ""
 ENV DB_PORT ""
@@ -30,7 +39,4 @@ ENV DB_NAME ""
 ENV MUSIC_PATH ""
 ENV CHARACTERS_PATH ""
 
-COPY --from=build_go /app/main .
-COPY ./songs/ ./songs/
-
 CMD ./main