Add timeout for clean shutdown (#1650)

* Fix overlay

* Update Dockerfile

Dockerfile

@@ -1,24 +1,29 @@
 ARG BUILD_FROM
 FROM $BUILD_FROM
 
+ENV \
+    S6_SERVICES_GRACETIME=10000
+
 # Install base
-RUN apk add --no-cache \
-    eudev \
-    eudev-libs \
-    git \
-    glib \
-    libffi \
-    libpulse \
-    musl \
-    openssl \
-    socat
+RUN \
+    apk add --no-cache \
+        eudev \
+        eudev-libs \
+        git \
+        glib \
+        libffi \
+        libpulse \
+        musl \
+        openssl \
+        socat
 
 ARG BUILD_ARCH
 WORKDIR /usr/src
 
 # Install requirements
 COPY requirements.txt .
-RUN export MAKEFLAGS="-j$(nproc)" \
+RUN \
+    export MAKEFLAGS="-j$(nproc)" \
     && pip3 install --no-cache-dir --no-index --only-binary=:all: --find-links \
         "https://wheels.home-assistant.io/alpine-$(cut -d '.' -f 1-2 < /etc/alpine-release)/${BUILD_ARCH}/" \
         -r ./requirements.txt \
@@ -26,7 +31,8 @@ RUN export MAKEFLAGS="-j$(nproc)" \
 
 # Install Home Assistant Supervisor
 COPY . supervisor
-RUN pip3 install --no-cache-dir -e ./supervisor \
+RUN \
+    pip3 install --no-cache-dir -e ./supervisor \
     && python3 -m compileall ./supervisor/supervisor