Add a healthcheck for Weston containers

Users may choose to rely on this healthcheck in order to prevent
race conditions where an application is started faster than Weston,
leading to errors where the application cannot find a display.

This also may fix bugs for users that may have implemented retry-logic
in their application layer. These users can safely delete this logic
and rely on this declarative healthcheck instead.

Signed-off-by: Leonardo Held <leonardo.held@toradex.com>

debian-docker-images/am62/weston-am62/Dockerfile

@@ -30,6 +30,9 @@ RUN usermod -a -G input torizon
 # See https://github.com/kennylevinsen/seatd/blob/a803ba0502cccf147eec7fbcacd11c5b8643c0e0/man/seatd-launch.1.scd
 RUN chmod u+s /usr/bin/seatd-launch
 
+HEALTHCHECK --interval=1s --timeout=5s --start-period=0s --retries=3 \
+    CMD find /tmp/1000-runtime-dir -maxdepth 1 -type s -name 'wayland-*' -print -quit | grep -q .
+
 WORKDIR /home/torizon
 
 ENTRYPOINT ["/usr/bin/entry.sh"]

debian-docker-images/imx8/weston-imx8/Dockerfile

@@ -36,6 +36,9 @@ RUN usermod -a -G input torizon
 # See https://github.com/kennylevinsen/seatd/blob/a803ba0502cccf147eec7fbcacd11c5b8643c0e0/man/seatd-launch.1.scd
 RUN chmod u+s /usr/bin/seatd-launch
 
+HEALTHCHECK --interval=1s --timeout=5s --start-period=0s --retries=3 \
+    CMD find /tmp/1000-runtime-dir -maxdepth 1 -type s -name 'wayland-*' -print -quit | grep -q .
+
 WORKDIR /home/torizon
 
 ENTRYPOINT ["/usr/bin/entry.sh"]

debian-docker-images/upstream/qt5-wayland-examples/Dockerfile

@@ -3,14 +3,14 @@
 
 ARG BASE_NAME=qt5-wayland
 ARG IMAGE_TAG=3
-ARG DOCKER_REGISTRY=torizon
-
+ARG DOCKER_REGISTRY=docker.io
+ARG DOCKER_NAMESPACE=torizon
 ARG QT5_EXAMPLES_DEBIAN
 # Uncomment the line below if building outside of the context of GitLab CI
-# ARG QT5_EXAMPLES_DEBIAN=1
+ARG QT5_EXAMPLES_DEBIAN=1
 ARG QT5_EXAMPLES_DEBIAN_INSTALL=${QT5_EXAMPLES_DEBIAN:+"qtbase5-examples qtdeclarative5-examples"}
 
-FROM $DOCKER_REGISTRY/torizon/$BASE_NAME:$IMAGE_TAG AS base
+FROM $DOCKER_REGISTRY/$DOCKER_NAMESPACE/$BASE_NAME:$IMAGE_TAG AS base
 ARG QT5_EXAMPLES_DEBIAN_INSTALL
 
 RUN apt-get -y update && apt-get install -y --no-install-recommends \

debian-docker-images/upstream/weston/Dockerfile

@@ -30,6 +30,9 @@ RUN usermod -a -G input torizon
 # See https://github.com/kennylevinsen/seatd/blob/a803ba0502cccf147eec7fbcacd11c5b8643c0e0/man/seatd-launch.1.scd
 RUN chmod u+s /usr/bin/seatd-launch
 
+HEALTHCHECK --interval=1s --timeout=5s --start-period=0s --retries=3 \
+    CMD find /tmp/1000-runtime-dir -maxdepth 1 -type s -name 'wayland-*' -print -quit | grep -q .
+
 WORKDIR /home/torizon
 
 ENTRYPOINT ["/usr/bin/entry.sh"]