Reduce docker container size and add python inside

build/hassio/Dockerfile

@@ -1,23 +1,40 @@
 ARG BUILD_FROM
-FROM $BUILD_FROM
 
-RUN apk add --no-cache git go ffmpeg
+FROM $BUILD_FROM as build
 
-ARG BUILD_ARCH
+# 1. Build go2rtc
+RUN apk add --no-cache git go
 
 RUN git clone https://github.com/AlexxIT/go2rtc \
     && cd go2rtc \
-    && CGO_ENABLED=0 go build -ldflags "-s -w" -trimpath -o /usr/local/bin
+    && CGO_ENABLED=0 go build -ldflags "-s -w" -trimpath
+
+# 2. Download ngrok
+ARG BUILD_ARCH
 
 # https://github.com/home-assistant/docker-base/blob/master/alpine/Dockerfile
 RUN if [ "${BUILD_ARCH}" = "aarch64" ]; then BUILD_ARCH="arm64"; \
     elif [ "${BUILD_ARCH}" = "armv7" ]; then BUILD_ARCH="arm"; fi \
     && cd go2rtc \
     && curl $(curl -s "https://raw.githubusercontent.com/ngrok/docker-ngrok/main/releases.json" | jq -r ".${BUILD_ARCH}.url") -o ngrok.zip \
-    && unzip ngrok -d /usr/local/bin
+    && unzip ngrok
 
-RUN rm -r /go2rtc
 
+
+# https://devopscube.com/reduce-docker-image-size/
+FROM $BUILD_FROM
+
+# 3. Copy go2rtc and ngrok to release
+COPY --from=build /go2rtc/go2rtc /usr/local/bin
+COPY --from=build /go2rtc/ngrok /usr/local/bin
+
+# 4. Install ffmpeg
+# apk base  OK: 22  MiB in 40  packages
+# ffmpeg    OK: 113 MiB in 110 packages
+# python3   OK: 161 MiB in 114 packages
+RUN apk add --no-cache ffmpeg python3
+
+# 5. Copy run to release
 COPY run.sh /
 RUN chmod a+x /run.sh
 

build/hassio/run.sh

@@ -2,23 +2,13 @@
 
 set +e
 
-# add the feature for update to any version
-if [ -f "/config/go2rtc.version" ]; then
-    branch=`cat /config/go2rtc.version`
-    echo "Update to version $branch"
-    git clone --depth 1 --branch "$branch" https://github.com/AlexxIT/go2rtc \
-      && cd go2rtc \
-      && CGO_ENABLED=0 go build -ldflags "-s -w" -trimpath -o /usr/local/bin \
-      && rm -r /go2rtc && rm /config/go2rtc.version
-fi
-
-# set cwd for go2rtc (for config file, Hass itegration, etc)
+# set cwd for go2rtc (for config file, Hass integration, etc)
 cd /config
 
 # add the feature to override go2rtc binary from Hass config folder
 export PATH="/config:$PATH"
 
 while true; do
-    go2rtc
-    sleep 5
+  go2rtc
+  sleep 5
 done