diff --git a/Dockerfile b/Dockerfile
index 89b1b7b..ab3f5a5 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,17 +1,22 @@
 # bump: golang /GOLANG_VERSION=([\d.]+)/ docker:golang|^1
 # bump: golang link "Release notes" https://golang.org/doc/devel/release.html
-ARG GOLANG_VERSION=1.16.7
+ARG GOLANG_VERSION=1.17.0
 # bump: youtube-dl /YDL_VERSION=([\d.]+)/ https://github.com/ytdl-org/youtube-dl.git|/^\d/|sort
 # bump: youtube-dl link "Release notes" https://github.com/ytdl-org/youtube-dl/releases/tag/$LATEST
 ARG YDL_VERSION=2021.06.06
 
-FROM golang:$GOLANG_VERSION
+FROM golang:$GOLANG_VERSION AS base
 ARG YDL_VERSION
 
 RUN \
+  apt-get update -q && \
+  apt-get install -y -q python-is-python3 && \
   curl -L -o /usr/local/bin/youtube-dl https://yt-dl.org/downloads/$YDL_VERSION/youtube-dl && \
   chmod a+x /usr/local/bin/youtube-dl
 
+FROM base AS dev
+
+FROM base
 WORKDIR /src
 COPY go.* *.go ./
 COPY cmd cmd