use tags and python3 in dockerfile

Signed-off-by: jbpratt <jbpratt78@gmail.com>

Dockerfile

@@ -1,14 +1,14 @@
-FROM golang as builder
+FROM docker.io/library/golang:1.19-buster as builder
 ENV GO111MODULE=on
 WORKDIR /code
 ADD go.mod go.sum /code/
 RUN go mod download
 ADD . .
 RUN go build -o /radio .
 
-FROM ubuntu:latest 
+FROM docker.io/library/ubuntu:latest
 WORKDIR /
-RUN apt update && apt install -y ffmpeg wget python
+RUN apt update && apt install -y ffmpeg wget python3
 RUN wget https://yt-dl.org/downloads/latest/youtube-dl -O /usr/local/bin/youtube-dl
 RUN chmod a+rx /usr/local/bin/youtube-dl
 COPY --from=builder /radio /usr/bin/radio