fix(docker): fix compose race conditions on mariadb_init

We want the dependent services to wait until the initialization service
of mariadb finishes, but also properly accept if it already exited
before a leaf service gets picked up and put into created state. By
using the service_completed_successfully signal, we can ensure precisely
this, without being racy and leading to none booted services.

While at it, remove the compose version identifiers as docker-compose
deprecated them and always warned about when running docker-compose.

docker-compose.aur-dev.yml

@@ -1,5 +1,4 @@
-version: "3.8"
-
+---
 services:
   ca:
     volumes:

docker-compose.override.yml

@@ -1,16 +1,10 @@
-version: "3.8"
-
+---
 services:
   ca:
     volumes:
       - ./data:/data
       - step:/root/.step
 
-  mariadb_init:
-    depends_on:
-      mariadb:
-        condition: service_healthy
-
   git:
     volumes:
       - git_data:/aurweb/aur.git
@@ -21,9 +15,6 @@ services:
       - git_data:/aurweb/aur.git
       - ./data:/data
       - smartgit_run:/var/run/smartgit
-    depends_on:
-      mariadb:
-        condition: service_healthy
 
   fastapi:
     volumes:

docker-compose.yml

@@ -1,3 +1,4 @@
+---
 #
 # Docker service definitions for the aurweb project.
 #
@@ -16,8 +17,6 @@
 #
 # Copyright (C) 2021 aurweb Development
 # All Rights Reserved.
-version: "3.8"
-
 services:
   aurweb-image:
     build: .
@@ -107,8 +106,10 @@ services:
       test: "bash /docker/health/sshd.sh"
       interval: 3s
     depends_on:
+      mariadb:
+        condition: service_healthy
       mariadb_init:
-        condition: service_started
+        condition: service_completed_successfully
     volumes:
       - mariadb_run:/var/run/mysqld
 
@@ -122,6 +123,9 @@ services:
     healthcheck:
       test: "bash /docker/health/smartgit.sh"
       interval: 3s
+    depends_on:
+      mariadb:
+        condition: service_healthy
 
   cgit-fastapi:
     image: aurweb:latest
@@ -152,8 +156,10 @@ services:
     entrypoint: /docker/cron-entrypoint.sh
     command: /docker/scripts/run-cron.sh
     depends_on:
+      mariadb:
+        condition: service_healthy
       mariadb_init:
-        condition: service_started
+        condition: service_completed_successfully
     volumes:
       - ./aurweb:/aurweb/aurweb
       - mariadb_run:/var/run/mysqld
@@ -182,6 +188,12 @@ services:
         condition: service_healthy
       cron:
         condition: service_started
+      mariadb:
+        condition: service_healthy
+      mariadb_init:
+        condition: service_completed_successfully
+      tempo:
+        condition: service_healthy
     volumes:
       - archives:/var/lib/aurweb/archives
       - mariadb_run:/var/run/mysqld