refactor: rename containers as docker compositions, as they are

docker compositions/wallabag/.gitignore

@@ -0,0 +1,2 @@
+/data/
+/images/

docker compositions/wallabag/docker-compose.upstream.yml

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+---
+services:
+  wallabag:
+    image: wallabag/wallabag
+    restart: unless-stopped
+    environment:
+      - MYSQL_ROOT_PASSWORD=wallaroot
+      - SYMFONY__ENV__DATABASE_DRIVER=pdo_mysql
+      - SYMFONY__ENV__DATABASE_HOST=db
+      - SYMFONY__ENV__DATABASE_PORT=3306
+      - SYMFONY__ENV__DATABASE_NAME=wallabag
+      - SYMFONY__ENV__DATABASE_USER=wallabag
+      - SYMFONY__ENV__DATABASE_PASSWORD=wallapass
+      - SYMFONY__ENV__DATABASE_CHARSET=utf8mb4
+      - SYMFONY__ENV__DATABASE_TABLE_PREFIX="wallabag_"
+      - SYMFONY__ENV__MAILER_DSN=smtp://127.0.0.1
+      - SYMFONY__ENV__FROM_EMAIL=wallabag@example.com
+      - SYMFONY__ENV__DOMAIN_NAME=https://your-wallabag-instance.wallabag.org
+      - SYMFONY__ENV__SERVER_NAME="Your wallabag instance"
+    ports:
+      - "80"
+    volumes:
+      - /opt/wallabag/images:/var/www/wallabag/web/assets/images
+    healthcheck:
+      test:
+        - CMD
+        - wget
+        - --no-verbose
+        - --tries=1
+        - --spider
+        - http://localhost/api/info
+      interval: 1m
+      timeout: 3s
+    depends_on:
+      - db
+      - redis
+  db:
+    image: mariadb
+    restart: unless-stopped
+    environment:
+      - MYSQL_ROOT_PASSWORD=wallaroot
+    volumes:
+      - /opt/wallabag/data:/var/lib/mysql
+    healthcheck:
+      test:
+        - CMD
+        - mysqladmin
+        - ping
+        - -h
+        - localhost
+      interval: 20s
+      timeout: 3s
+  redis:
+    image: redis:alpine
+    restart: unless-stopped
+    healthcheck:
+      test: ["CMD", "redis-cli", "ping"]
+      interval: 20s
+      timeout: 3s