i think mvp

.gitignore

@@ -0,0 +1 @@
+/work.d

build.sh

@@ -1,5 +1,51 @@
 #! /bin/bash
 
-date
+main() {
+   set -eo pipefail
 
-exit 0
+   cd_work_d
+
+   ytdlp2STRM_d=./ytdlp2STRM
+   ensure_ytdlp2STRM_git "$ytdlp2STRM_d"
+
+   head_ts="$(cd "$ytdlp2STRM_d"; git log -n 1 --format=%as)"
+   echo head_ts=$head_ts
+
+   yt_dlp_latest="$(pip3 index versions yt-dlp | grep LATEST | awk '{print $NF}')"
+   echo yt_dlp_latest=$yt_dlp_latest
+
+   img=registry-app.inhome.blapointe.com:5001/bel/ytdlp2strm
+   tag=${head_ts}-${yt_dlp_latest}
+   if docker pull $img:$tag; then
+      exit 0
+   fi
+
+   cd "$ytdlp2STRM_d"
+   docker build -t "$img:$tag" .
+   docker tag "$img:$tag" "$img:latest"
+   $DEBUG docker push "$img:$tag"
+   $DEBUG docker push "$img:latest"
+}
+
+cd_work_d() {
+   d="$PWD"
+   mkdir -p ./work.d
+   cd ./work.d
+   cleanup() {
+      cd "$d"
+      $DEBUG rm -rf ./work.d || true
+   }
+   trap cleanup EXIT
+}
+
+ensure_ytdlp2STRM_git() {
+   if [ ! -d "$1" ]; then
+      git clone --depth=1 \
+         https://github.com/fe80Grau/ytdlp2STRM.git \
+         "$1"
+   fi
+}
+
+if [ "$0" == "$BASH_SOURCE" ]; then
+   main "$@"
+fi