put notify-push into its own container

Signed-off-by: Simon L <szaimen@e.mail.de>

Containers/notify-push/Dockerfile

@@ -0,0 +1,20 @@
+FROM alpine:3.18.1
+
+COPY --chmod=775 start.sh /start.sh
+
+RUN set -ex; \
+    apk add --no-cache \
+        ca-certificates \
+        tzdata \
+        bash \
+        openssl; \
+# Give root a random password
+    echo "root:$(openssl rand -base64 12)" | chpasswd; \
+    apk del --no-cache \
+        openssl;
+
+USER 33
+ENTRYPOINT ["/start.sh"]
+
+HEALTHCHECK CMD nc -z localhost 7867 || exit 1
+LABEL com.centurylinklabs.watchtower.monitor-only="true"