diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 457741d..929f711 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -109,7 +109,6 @@ deploy:
       cd ~/deploy
       docker system prune -a --force
       docker compose pull > deploy.log 2>&1
-      docker compose down >> deploy.log 2>&1
       docker compose up -d --remove-orphans --force-recreate >> deploy.log 2>&1
       docker compose ps >> deploy.log 2>&1
       EOF
diff --git a/compose.yaml b/compose.yaml
index 53771a3..a6f946f 100644
--- a/compose.yaml
+++ b/compose.yaml
@@ -400,6 +400,9 @@ services:
       - type: bind
         source: /var/run/docker.sock
         target: /var/run/docker.sock
+      - type: bind
+        source: /tmp
+        target: /tmp
 
   proxy:
     image: docker.io/nginx:1.27-alpine3.21
@@ -410,7 +413,7 @@ services:
       test: ["CMD", "service", "nginx", "status", "||", " exit 1"]
       interval: 1m30s
       timeout: 5s
-      start_period: 5s
+      start_period: 15s
       start_interval: 2s
       retries: 5
     ports:
diff --git a/services/backend/api/v1/achievement/schemas.py b/services/backend/api/v1/achievement/schemas.py
index 0017a16..74feaf8 100644
--- a/services/backend/api/v1/achievement/schemas.py
+++ b/services/backend/api/v1/achievement/schemas.py
@@ -1,3 +1,5 @@
+from datetime import datetime
+
 from ninja import ModelSchema, Schema
 from pydantic import Field
 
@@ -19,6 +21,7 @@ class UserAchievementSchema(Schema):
     name: str = Field(..., alias="achievement.name")
     description: str = Field(..., alias="achievement.description")
     icon: str = Field(..., alias="achievement.icon")
+    received_at: datetime
 
     class Meta:
         model = UserAchievement
diff --git a/services/backend/api/v1/user/schemas.py b/services/backend/api/v1/user/schemas.py
index 2788913..2109f8e 100644
--- a/services/backend/api/v1/user/schemas.py
+++ b/services/backend/api/v1/user/schemas.py
@@ -32,7 +32,7 @@ class UserSchema(ModelSchema):
 
     class Meta:
         model = User
-        fields = ["id", "email", "username", "created_at"]
+        fields = ["id", "avatar", "email", "username", "created_at"]
 
 
 class StatSchema(Schema):
diff --git a/services/backend/apps/achievement/migrations/0001_initial.py b/services/backend/apps/achievement/migrations/0001_initial.py
index 03300ea..82a5079 100644
--- a/services/backend/apps/achievement/migrations/0001_initial.py
+++ b/services/backend/apps/achievement/migrations/0001_initial.py
@@ -1,4 +1,4 @@
-# Generated by Django 5.1.6 on 2025-03-03 07:20
+# Generated by Django 5.1.6 on 2025-03-03 09:41
 
 import apps.achievement.models
 import django.db.models.deletion
diff --git a/services/backend/apps/achievement/migrations/0002_initial.py b/services/backend/apps/achievement/migrations/0002_initial.py
index 1d03338..19f8cc3 100644
--- a/services/backend/apps/achievement/migrations/0002_initial.py
+++ b/services/backend/apps/achievement/migrations/0002_initial.py
@@ -1,4 +1,4 @@
-# Generated by Django 5.1.6 on 2025-03-03 07:20
+# Generated by Django 5.1.6 on 2025-03-03 09:41
 
 import django.db.models.deletion
 from django.db import migrations, models
diff --git a/services/backend/apps/competition/migrations/0001_initial.py b/services/backend/apps/competition/migrations/0001_initial.py
index 428a78a..1d11125 100644
--- a/services/backend/apps/competition/migrations/0001_initial.py
+++ b/services/backend/apps/competition/migrations/0001_initial.py
@@ -1,4 +1,4 @@
-# Generated by Django 5.1.6 on 2025-03-03 07:20
+# Generated by Django 5.1.6 on 2025-03-03 09:41
 
 import apps.competition.models
 import datetime
diff --git a/services/backend/apps/review/migrations/0001_initial.py b/services/backend/apps/review/migrations/0001_initial.py
index afe281e..d4c9ece 100644
--- a/services/backend/apps/review/migrations/0001_initial.py
+++ b/services/backend/apps/review/migrations/0001_initial.py
@@ -1,4 +1,4 @@
-# Generated by Django 5.1.6 on 2025-03-03 07:20
+# Generated by Django 5.1.6 on 2025-03-03 09:41
 
 import uuid
 from django.db import migrations, models
diff --git a/services/backend/apps/review/migrations/0002_initial.py b/services/backend/apps/review/migrations/0002_initial.py
index 5a5d3cc..61347c5 100644
--- a/services/backend/apps/review/migrations/0002_initial.py
+++ b/services/backend/apps/review/migrations/0002_initial.py
@@ -1,4 +1,4 @@
-# Generated by Django 5.1.6 on 2025-03-03 07:20
+# Generated by Django 5.1.6 on 2025-03-03 09:41
 
 import django.db.models.deletion
 from django.db import migrations, models
diff --git a/services/backend/apps/task/admin.py b/services/backend/apps/task/admin.py
index 10f3c67..ca097c0 100644
--- a/services/backend/apps/task/admin.py
+++ b/services/backend/apps/task/admin.py
@@ -3,8 +3,8 @@ from django.contrib import admin
 from apps.task.models import (
     CompetitionTask,
     CompetitionTaskAttachment,
+    CompetitionTaskCriteria,
     CompetitionTaskSubmission,
-    CompetitionTaskCriteria
 )
 
 
@@ -23,7 +23,10 @@ class CompetitionTaskAdmin(admin.ModelAdmin):
     list_display = ("title", "type", "points")
     filter_horizontal = ("reviewers",)
     list_filter = ("type",)
-    inlines = (CompletionAttachmentInline, CompetitionCriteriaInline,)
+    inlines = (
+        CompletionAttachmentInline,
+        CompetitionCriteriaInline,
+    )
 
 
 @admin.register(CompetitionTaskSubmission)
@@ -45,9 +48,6 @@ class CompetitionTaskSubmissionAdmin(admin.ModelAdmin):
     def has_add_permission(self, request, obj=None):
         return False
 
-    def has_delete_permission(self, request, obj=None):
-        return False
-
 
 class CompetitionTaskInline(admin.StackedInline):
     model = CompetitionTask
diff --git a/services/backend/apps/task/migrations/0001_initial.py b/services/backend/apps/task/migrations/0001_initial.py
index 9cfeeae..943b9ca 100644
--- a/services/backend/apps/task/migrations/0001_initial.py
+++ b/services/backend/apps/task/migrations/0001_initial.py
@@ -1,8 +1,8 @@
-# Generated by Django 5.1.6 on 2025-03-03 07:20
+# Generated by Django 5.1.6 on 2025-03-03 09:41
 
 import apps.task.models
 import django.db.models.deletion
-import martor.models
+import mdeditor.fields
 import uuid
 from django.db import migrations, models
 
@@ -22,17 +22,17 @@ class Migration(migrations.Migration):
             name='CompetitionTask',
             fields=[
                 ('id', models.UUIDField(default=uuid.uuid4, editable=False, primary_key=True, serialize=False)),
-                ('in_competition_position', models.PositiveSmallIntegerField()),
+                ('in_competition_position', models.PositiveSmallIntegerField(verbose_name='позиция в соревновании')),
                 ('title', models.CharField(max_length=50, verbose_name='заголовок')),
-                ('description', martor.models.MartorField(verbose_name='описание')),
-                ('max_attempts', models.PositiveSmallIntegerField(blank=True, null=True)),
+                ('description', mdeditor.fields.MDTextField(verbose_name='описание')),
+                ('max_attempts', models.PositiveSmallIntegerField(blank=True, null=True, verbose_name='максимальное кол-во попыток')),
                 ('type', models.CharField(choices=[('input', 'Ввод правильного ответа'), ('checker', 'Ввод кода'), ('review', 'Ручная')], max_length=8, verbose_name='тип проверки')),
-                ('correct_answer_file', models.FileField(blank=True, null=True, upload_to=apps.task.models.CompetitionTask.answer_file_upload_to, verbose_name='файл с правильным ответом')),
-                ('points', models.IntegerField(blank=True, null=True, verbose_name='баллы за задание')),
-                ('answer_file_path', models.TextField(blank=True, default='stdout', help_text='Путь до файла в котором ожидается результат. Пример: stdout или ./output.txt', null=True, verbose_name='куда сделать вывод программы участнику')),
-                ('submission_reviewers_count', models.PositiveSmallIntegerField(blank=True, default=1, null=True)),
-                ('competition', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='competition.competition')),
-                ('reviewers', models.ManyToManyField(blank=True, help_text='Справа отображаются действующие проверяющие, слева - доступные для выбора. Для перемещения можно кликнуть 2 раза по проверяющему', to='review.reviewer', verbose_name='ревьюверы')),
+                ('correct_answer_file', models.FileField(blank=True, help_text='Имеет смысл только при автоматической (ввод ответа или кода) проверке.', null=True, upload_to=apps.task.models.CompetitionTask.answer_file_upload_to, verbose_name='файл с правильным ответом')),
+                ('points', models.IntegerField(blank=True, null=True, verbose_name='общий балл за задание')),
+                ('answer_file_path', models.TextField(blank=True, default='stdout', help_text='Путь до файла в котором ожидается результат. Пример: stdout или ./output.txt. Имеет смысл только при автоматическом типе проверки.', null=True, verbose_name='куда сделать вывод программы участнику')),
+                ('submission_reviewers_count', models.PositiveSmallIntegerField(blank=True, default=1, null=True, verbose_name='кол-во проверяющих для зачета задачи')),
+                ('competition', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='competition.competition', verbose_name='привязанное соревнование')),
+                ('reviewers', models.ManyToManyField(blank=True, help_text='Справа отображаются действующие проверяющие, слева - доступные для выбора. Для перемещения можно кликнуть 2 раза по проверяющему. Имеет смысл только при ручном типе проверки.', to='review.reviewer', verbose_name='ревьюверы')),
             ],
             options={
                 'verbose_name': 'задание',
@@ -57,14 +57,15 @@ class Migration(migrations.Migration):
             name='CompetitionTaskCriteria',
             fields=[
                 ('id', models.UUIDField(default=uuid.uuid4, editable=False, primary_key=True, serialize=False)),
-                ('name', models.TextField()),
-                ('slug', models.SlugField()),
-                ('description', models.TextField()),
-                ('max_value', models.PositiveSmallIntegerField()),
+                ('name', models.TextField(verbose_name='название')),
+                ('slug', models.SlugField(verbose_name='техническое название')),
+                ('description', models.TextField(verbose_name='описание критерии')),
+                ('max_value', models.PositiveSmallIntegerField(verbose_name='максимальное кол-во баллов')),
                 ('task', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='criteries', to='task.competitiontask')),
             ],
             options={
-                'abstract': False,
+                'verbose_name': 'критерий',
+                'verbose_name_plural': 'критерии',
             },
         ),
         migrations.CreateModel(
diff --git a/services/backend/apps/task/models.py b/services/backend/apps/task/models.py
index ef0016d..8f6936e 100644
--- a/services/backend/apps/task/models.py
+++ b/services/backend/apps/task/models.py
@@ -22,12 +22,16 @@ class CompetitionTask(BaseModel):
     in_competition_position = models.PositiveSmallIntegerField(
         verbose_name="позиция в соревновании"
     )
-    competition = models.ForeignKey(Competition, on_delete=models.CASCADE,
-                                    verbose_name="привязанное соревнование")
+    competition = models.ForeignKey(
+        Competition,
+        on_delete=models.CASCADE,
+        verbose_name="привязанное соревнование",
+    )
     title = models.CharField(verbose_name="заголовок", max_length=50)
     description = MDTextField(verbose_name="описание")
-    max_attempts = models.PositiveSmallIntegerField(null=True, blank=True,
-                                                    verbose_name="максимальное кол-во попыток")
+    max_attempts = models.PositiveSmallIntegerField(
+        null=True, blank=True, verbose_name="максимальное кол-во попыток"
+    )
     type = models.CharField(
         choices=CompetitionTaskType, max_length=8, verbose_name="тип проверки"
     )
@@ -38,9 +42,10 @@ class CompetitionTask(BaseModel):
         null=True,
         blank=True,
         verbose_name="файл с правильным ответом",
+        help_text="Имеет смысл только при автоматической (ввод ответа или кода) проверке.",
     )
     points = models.IntegerField(
-        null=True, blank=True, verbose_name="баллы за задание"
+        null=True, blank=True, verbose_name="общий балл за задание"
     )
 
     # only when "checker" type
@@ -48,7 +53,10 @@ class CompetitionTask(BaseModel):
         null=True,
         blank=True,
         verbose_name="куда сделать вывод программы участнику",
-        help_text="Путь до файла в котором ожидается результат. Пример: stdout или ./output.txt",
+        help_text=(
+            "Путь до файла в котором ожидается результат. "
+            "Пример: stdout или ./output.txt. Имеет смысл только при автоматическом типе проверки."
+        ),
         default="stdout",
     )
 
@@ -57,10 +65,17 @@ class CompetitionTask(BaseModel):
         Reviewer,
         blank=True,
         verbose_name="ревьюверы",
-        help_text="Справа отображаются действующие проверяющие, слева - доступные для выбора. Для перемещения можно кликнуть 2 раза по проверяющему",
+        help_text=(
+            "Справа отображаются действующие проверяющие, слева - доступные для выбора. "
+            "Для перемещения можно кликнуть 2 раза по проверяющему. Имеет смысл только"
+            " при ручном типе проверки."
+        ),
     )
     submission_reviewers_count = models.PositiveSmallIntegerField(
-        default=1, null=True, blank=True, verbose_name="кол-во проверяющих для зачета задачи"
+        default=1,
+        null=True,
+        blank=True,
+        verbose_name="кол-во проверяющих для зачета задачи",
     )
 
     def __str__(self):
@@ -76,15 +91,9 @@ class CompetitionTaskCriteria(BaseModel):
         CompetitionTask, on_delete=models.CASCADE, related_name="criteries"
     )
 
-    name = models.TextField(
-        verbose_name="название"
-    )
-    slug = models.SlugField(
-        verbose_name="техническое название"
-    )
-    description = models.TextField(
-        verbose_name="описание критерии"
-    )
+    name = models.TextField(verbose_name="название")
+    slug = models.SlugField(verbose_name="техническое название")
+    description = models.TextField(verbose_name="описание критерии")
     max_value = models.PositiveSmallIntegerField(
         verbose_name="максимальное кол-во баллов"
     )
diff --git a/services/backend/apps/task/tasks.py b/services/backend/apps/task/tasks.py
index 9001a6d..bb909c2 100644
--- a/services/backend/apps/task/tasks.py
+++ b/services/backend/apps/task/tasks.py
@@ -1,28 +1,40 @@
+import hashlib
+
 import httpx
 from celery import shared_task
 from django.conf import settings
 from django.core.files.base import ContentFile
 
+from apps.task.models import CompetitionTaskSubmission
+
 
 @shared_task(bind=True, max_retries=3)
 def analyze_data_task(self, submission_id):
-    from .models import CompetitionTaskSubmission
-
     submission = CompetitionTaskSubmission.objects.get(id=submission_id)
     try:
-        code = submission.content.read().decode()
+        code_url = (
+            f"{settings.MINIO_DEFAULT_CUSTOM_ENDPOINT_URL}{submission.path}"
+        )
         files = [
-            (f.name, f.file.open("rb"))
-            for f in submission.task.attachments.filter(public=True)
+            {
+                "url": f"{settings.MINIO_DEFAULT_CUSTOM_ENDPOINT_URL}{attachment.path}",
+                "bind_path": attachment.bind_at,
+            }
+            for attachment in submission.task.attachments.filter(
+                bind_path__isnull=False
+            )
         ]
 
         response = httpx.post(
             f"{settings.CHECKER_API_ENDPOINT}/execute",
-            files=[("files", (f.name, f)) for f in files]
-            + [
-                ("code", code),
-                ("expected_hash", submission.task.correct_answer_hash),
-            ],
+            json={
+                "files": files,
+                "code_url": code_url,
+                "answer_file_path": submission.task.answer_file_path,
+                "expected_hash": hashlib.sha256(
+                    submission.task.correct_answer_file.read().encode()
+                ).hexdigest(),
+            },
             timeout=30,
         )
         response.raise_for_status()
diff --git a/services/backend/apps/team/migrations/0001_initial.py b/services/backend/apps/team/migrations/0001_initial.py
index 1924dc3..94cacb2 100644
--- a/services/backend/apps/team/migrations/0001_initial.py
+++ b/services/backend/apps/team/migrations/0001_initial.py
@@ -1,4 +1,4 @@
-# Generated by Django 5.1.6 on 2025-03-03 07:20
+# Generated by Django 5.1.6 on 2025-03-03 09:41
 
 import django.db.models.deletion
 import uuid
diff --git a/services/backend/apps/user/migrations/0001_initial.py b/services/backend/apps/user/migrations/0001_initial.py
index 4ade297..d6ee060 100644
--- a/services/backend/apps/user/migrations/0001_initial.py
+++ b/services/backend/apps/user/migrations/0001_initial.py
@@ -1,4 +1,4 @@
-# Generated by Django 5.1.6 on 2025-03-03 07:20
+# Generated by Django 5.1.6 on 2025-03-03 09:41
 
 import uuid
 from django.db import migrations, models
@@ -17,11 +17,12 @@ class Migration(migrations.Migration):
             name='User',
             fields=[
                 ('id', models.UUIDField(default=uuid.uuid4, editable=False, primary_key=True, serialize=False)),
+                ('avatar', models.ImageField(blank=True, null=True, upload_to='', verbose_name='аватар')),
                 ('email', models.EmailField(max_length=254, unique=True, verbose_name='почта')),
                 ('username', models.SlugField(unique=True, verbose_name='юзернейм')),
                 ('password', models.TextField(verbose_name='пароль')),
-                ('created_at', models.DateTimeField(auto_now=True)),
-                ('status', models.CharField(choices=[('student', 'Student'), ('metodist', 'Metodist')], default='student', max_length=10)),
+                ('created_at', models.DateTimeField(auto_now=True, verbose_name='дата создания')),
+                ('status', models.CharField(choices=[('student', 'Участник соревнований'), ('metodist', 'Методист (составитель заданий)')], default='student', max_length=10, verbose_name='роль участника')),
                 ('achievements', models.ManyToManyField(blank=True, to='achievement.achievement', verbose_name='ачивки пользователя')),
             ],
             options={
diff --git a/services/backend/apps/user/models.py b/services/backend/apps/user/models.py
index 598abb6..6a7a0c5 100644
--- a/services/backend/apps/user/models.py
+++ b/services/backend/apps/user/models.py
@@ -11,11 +11,14 @@ class UserRole(models.TextChoices):
 
 
 class User(BaseModel):
+    avatar = models.ImageField(verbose_name="аватар", null=True, blank=True)
     email = models.EmailField(unique=True, verbose_name="почта")
     username = models.SlugField(unique=True, verbose_name="юзернейм")
     password = models.TextField(verbose_name="пароль")
 
-    created_at = models.DateTimeField(auto_now=True, verbose_name="дата создания")
+    created_at = models.DateTimeField(
+        auto_now=True, verbose_name="дата создания"
+    )
 
     achievements = models.ManyToManyField(
         Achievement, blank=True, verbose_name="ачивки пользователя"
@@ -29,8 +32,10 @@ class User(BaseModel):
         return check_password(self.password, password)
 
     status = models.CharField(
-        max_length=10, choices=UserRole.choices, default="student",
-        verbose_name="роль участника"
+        max_length=10,
+        choices=UserRole.choices,
+        default="student",
+        verbose_name="роль участника",
     )
 
     def __str__(self) -> str:
diff --git a/services/backend/config/urls.py b/services/backend/config/urls.py
index 0fb5044..73e9ec2 100644
--- a/services/backend/config/urls.py
+++ b/services/backend/config/urls.py
@@ -12,12 +12,8 @@ admin.site.index_title = "DataRush"
 
 
 urlpatterns = [
-    # tinymce
-    path("tinymce/", include("tinymce.urls")),
-    # martor
-    path("martor/", include("martor.urls")),
     # mdeditor
-    path(r'mdeditor/', include('mdeditor.urls')),
+    path(r"mdeditor/", include("mdeditor.urls")),
     # Admin urls
     path("admin/", admin.site.urls),
     # API urls
diff --git a/services/checker/main.py b/services/checker/main.py
index a1d05fa..557fdba 100644
--- a/services/checker/main.py
+++ b/services/checker/main.py
@@ -202,6 +202,7 @@ async def execute_code(request: ExecutionRequest) -> ExecutionResponse:
             )
 
     with tempfile.TemporaryDirectory() as tmp_dir:
+        print(tmp_dir)
         bound_files = {}
         if request.files:
             async with aiohttp.ClientSession() as session: