try fix premature shutdown if startup takes too long

Dockerfile

@@ -53,8 +53,7 @@ COPY ./Labelbase/django /app
 # create migrations and static files, working around issues with manage.py of Labelbase
 # need to run 'manage.py help' to create a /app/config.ini first
 RUN \
-  MYSQL_PASSWORD=not_used python manage.py help && \
-  python manage.py makemigrations --noinput && \
+  MYSQL_PASSWORD=not_used python manage.py help >/dev/null && \
   python manage.py collectstatic --noinput && \
   rm /app/config.ini
 

docker_entrypoint.sh

@@ -124,13 +124,19 @@ cd /app
 if [ -f /root/data/config.ini ]; then
     cp /root/data/config.ini /app
 else
-    echo "Executing manage.py help"
-    python manage.py help
+    python manage.py help >/dev/null
     cp /app/config.ini /root/data
 fi
 
+# prevent premature shutdown while migrations are running
+trap ' ' TERM
+python manage.py makemigrations --noinput
 python manage.py migrate --noinput
+trap - TERM
+
 python manage.py process_tasks &
+app_process_tasks=$!
+
 gunicorn labellabor.wsgi:application -b 127.0.0.1:8000 --reload &
 app_process=$!
 
@@ -146,8 +152,9 @@ _term() {
     echo "Caught TERM signal!"
     kill -TERM "$nginx_process" 2>/dev/null
     kill -TERM "$app_process" 2>/dev/null
+    kill -TERM "$app_process_tasks" 2>/dev/null
     kill -TERM "$db_process" 2>/dev/null
 }
 
 trap _term TERM
-wait $db_process $app_process $nginx_process
+wait $db_process $app_process_tasks $app_process $nginx_process

scripts/deps.ts

@@ -1 +1,3 @@
 export * from "https://deno.land/x/embassyd_sdk@v0.3.3.0.11/mod.ts";
+export * from "https://deno.land/x/embassyd_sdk@v0.3.3.0.11/util.ts";
+export * from "https://deno.land/x/embassyd_sdk@v0.3.3.0.11/healthUtil.ts";

scripts/procedures/healthChecks.ts

@@ -1,5 +1,20 @@
-import { healthUtil, types as T } from "../deps.ts";
+import { error, guardDurationAboveMinimum, ok, types as T } from "../deps.ts";
+
+const url = "http://labelbase.embassy:8080";
 
 export const health: T.ExpectedExports.health = {
-  "app-ui": healthUtil.checkWebUrl("http://labelbase.embassy:8080"),  
+  async "app-ui"(effects, duration) {
+    // Ensure the starting duration is past a minimum
+    const value = guardDurationAboveMinimum({ duration, minimumTime: 60_000 });
+    if (value) {
+      return value;
+    }
+    try {
+      await effects.fetch(url);
+      return ok;
+    } catch (e) {
+      console.warn(e);
+      return error("Can not reach Labelbase");
+    }
+  },
 };