Update image to bookworm

.dockerignore

@@ -0,0 +1,16 @@
+ambiance
+bin
+cache
+config
+cookies.txt
+dndmusicbot
+Dockerfile
+.git
+.gitignore
+.dockerignore
+.jsimage
+k8s
+MPD
+oauth.cfg
+test
+src

Dockerfile.bot

@@ -1,14 +1,14 @@
-FROM golang:1.20 as builder
+FROM golang:1.21-bookworm as builder
 WORKDIR /src
 COPY . .
 RUN apt-get update && apt-get -y install libopus-dev libopusfile-dev && \
 	go build
 
-FROM debian:bullseye-slim
+FROM debian:bookworm-slim
 RUN apt-get update && apt-get -y install \
 	ca-certificates \
 	libopus-dev libopusfile-dev \
-	mpd
+	mpd ffmpeg
 
 COPY --from=builder /src/dndmusicbot /app/
 ADD tmpl /app/tmpl