ci: fix few Docker issues and use multi stage builds for a lighter image

Dockerfile

@@ -1,4 +1,6 @@
-FROM golang:1.19.4-alpine3.17
+FROM golang:1.22.1-alpine3.19 as build
+
+RUN apk add make git
 
 WORKDIR /code
 
@@ -8,6 +10,17 @@ RUN go mod download
 COPY . .
 RUN make build
 
+FROM alpine:3.19
+
+RUN adduser user -D
+
+USER user
+WORKDIR /home/user/dumb
+
+COPY --from=build /code/dumb .
+COPY --from=build /code/static static
+
 EXPOSE 5555/tcp
 
-CMD ["/code/dumb"]
+CMD ["./dumb"]
+

README.md

@@ -6,6 +6,15 @@ With the massive daily increase of useless scripts on Genius's web frontend, and
 ![Screenshot](https://raw.githubusercontent.com/rramiachraf/dumb/main/screenshot.png)
 
 ## Installation & Usage
+### Docker
+```bash
+git clone https://github.com/rramiachraf/dumb
+cd dumb
+docker buildx build -t dumb .
+docker run -p 8080:5555 --name dumb dumb
+```
+
+### Your own machine
 [Go 1.20+](https://go.dev/dl) is required.
 ```bash
 git clone https://github.com/rramiachraf/dumb