use apt-get instead of apt and --no-install-recommends option

Co-authored-by: Milas Bowman <milasb@gmail.com>
Signed-off-by: Guillaume Lours <guillaume.lours@docker.com>

traefik-golang/README.md

@@ -99,4 +99,4 @@ You can use this sample with the Dev Environments feature of Docker Desktop.
 To develop directly the backend service inside containers, you just need to use the https git url of the sample:  
 `https://github.com/docker/awesome-compose/tree/master/traefik-golang`
 
-![page](./dev-envs.png)
+![page](../dev-envs.png)

traefik-golang/backend/Dockerfile

@@ -9,8 +9,8 @@ RUN CGO_ENABLED=0 go build -o backend main.go
 FROM build as dev-envs
 
 RUN <<EOF
-apt update
-apt install git
+apt-get update
+apt-get install -y --no-install-recommends git
 EOF
 
 RUN <<EOF