reviewed dockerfile

Dockerfile

@@ -1,20 +1,29 @@
-FROM alpine:3.17
+# Multi stage build Dockerfile
+
+# There's no point in using the edge (development branch of alpine)
+FROM alpine:3.17 AS build
 # folder structure
-WORKDIR /usr/src/yt-dlp-webui/downloads
-VOLUME /downloads
 WORKDIR /usr/src/yt-dlp-webui
 # install core dependencies
-RUN apk update
-RUN apk add curl wget psmisc ffmpeg nodejs npm go yt-dlp
-# copy srcs
+RUN apk update && \
+    apk add curl wget psmisc ffmpeg nodejs yarn go yt-dlp
+# copia la salsa
 COPY . .
-# install node dependencies
+# build frontend
 WORKDIR /usr/src/yt-dlp-webui/frontend
-RUN npm i
-RUN npm run build
-# install go dependencies
+RUN yarn install && \
+    yarn build
+# build backend + incubator
 WORKDIR /usr/src/yt-dlp-webui
 RUN go build -o yt-dlp-webui
-# expose and run
+
+
+FROM alpine:3.17
+
+WORKDIR /usr/src/yt-dlp-webui/downloads
+VOLUME /downloads
+
+COPY --from=build /usr/src/yt-dlp-webui /usr/bin/yt-dlp-webui
+
 EXPOSE 3033
-CMD [ "./yt-dlp-webui" , "--out", "/downloads" ]
+CMD [ "/usr/bin/yt-dlp-webui" , "--out", "/downloads" ]