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chore: 로컬 개발용 MySQL Docker Compose 구성 추가 #11

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chore: 로컬 개발용 MySQL Docker Compose 구성 추가 #11

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21 changes: 21 additions & 0 deletions docker-compose.yml
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Original file line number Diff line number Diff line change
@@ -0,0 +1,21 @@
services:
mysql:
image: mysql:8.0
container_name: caquick-mysql
environment:
MYSQL_ROOT_PASSWORD: root
MYSQL_DATABASE: CaQuick
MYSQL_USER: caquick
MYSQL_PASSWORD: caquick
ports:
- '3306:3306'
volumes:
- caquick-mysql-data:/var/lib/mysql
healthcheck:
test: ['CMD', 'mysqladmin', 'ping', '-h', 'localhost']
interval: 10s
timeout: 5s
retries: 5
Comment on lines +15 to +18
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@coderabbitai coderabbitai bot Mar 15, 2026

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⚠️ Potential issue | 🟠 Major

🧩 Analysis chain

🌐 Web query:

For mysql:8.0 Docker Compose health checks, what is the recommended mysqladmin command (including authentication), and does mysqladmin ping -h localhost report success even when auth fails?

💡 Result:

Recommended mysqladmin healthcheck command (with auth)

Use TCP (not the localhost Unix socket) and include credentials, e.g.:

healthcheck:
  test: ["CMD-SHELL", "mysqladmin ping --host=127.0.0.1 --protocol=tcp --user=root --password=$$MYSQL_ROOT_PASSWORD --silent"]

Using 127.0.0.1 matters because -h localhost can make mysqladmin use a Unix socket instead of TCP. [1]

Does mysqladmin ping -h localhost succeed even when auth fails?

Yes. mysqladmin ping is effectively an “is the server up?” check: it exits 0 if it can tell the server is running, even if authentication fails (e.g., “Access denied”). [2][3]

Implication: if you need a healthcheck that also validates authentication/SQL readiness, use a real query (e.g., mysql ... -e "SELECT 1") rather than mysqladmin ping. [1]

Sources: [1] [2] [3]

헬스체크가 인증을 검증하지 않아 준비 상태를 오판할 수 있습니다.

mysqladmin ping -h localhost는 MySQL 프로세스가 실행 중인지만 확인하며, 인증이 실패해도 성공으로 반환됩니다. 실제로 데이터베이스에 연결할 수 없어도 헬스체크는 통과하므로, 의존 서비스가 실제로 준비되지 않은 상태에서 기동될 수 있습니다.

🔧 제안 변경 
     healthcheck:
-      test: ['CMD', 'mysqladmin', 'ping', '-h', 'localhost']
+      test:
+        [
+          'CMD-SHELL',
+          'mysqladmin ping --host=127.0.0.1 --protocol=tcp --user=root --password=$$MYSQL_ROOT_PASSWORD --silent || exit 1',
+        ]
       interval: 10s
       timeout: 5s
       retries: 5
+      start_period: 20s

127.0.0.1을 사용하여 TCP 프로토콜로 연결하고 자격증명을 포함해야 실제 인증 상태를 검증할 수 있습니다.

📝 Committable suggestion

‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change
test: ['CMD', 'mysqladmin', 'ping', '-h', 'localhost']
interval: 10s
timeout: 5s
retries: 5
test:
[
'CMD-SHELL',
'mysqladmin ping --host=127.0.0.1 --protocol=tcp --user=root --password=$$MYSQL_ROOT_PASSWORD --silent || exit 1',
]
interval: 10s
timeout: 5s
retries: 5
start_period: 20s
🤖 Prompt for AI Agents 
Verify each finding against the current code and only fix it if needed.

In `@docker-compose.yml` around lines 15 - 18, The healthcheck command test:
['CMD', 'mysqladmin', 'ping', '-h', 'localhost'] only checks the MySQL process
and can return success even when authentication fails; change the healthcheck to
perform a TCP-authenticated ping (use 127.0.0.1 instead of localhost) and pass
credentials from environment or a secret (e.g., use --user and --password
sourced from MYSQL_ROOT_PASSWORD or a secret) so the healthcheck verifies actual
login; keep interval/timeout/retries but replace the test entry to call
mysqladmin with host 127.0.0.1 and explicit credentials.


volumes:
caquick-mysql-data:
Comment on lines +1 to +21
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@coderabbitai coderabbitai bot Mar 15, 2026

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⚠️ Potential issue | 🟠 Major

🧩 Analysis chain

🏁 Script executed:

#!/bin/bash
set -euo pipefail

echo "[1] 문서/예제 env 파일 후보 찾기"
fd -HI 'README\.md|\.env.*example|docker-compose\.yml' | sort

echo "[2] DATABASE_URL 및 MySQL 연결 문자열 안내 여부 확인"
files="$(fd -HI 'README\.md|\.env.*example|docker-compose\.yml')"
if [ -n "$files" ]; then
  echo "$files" | xargs -r rg -n -C2 'DATABASE_URL|mysql://|MYSQL_(DATABASE|USER|PASSWORD|ROOT_PASSWORD)'
fi

Repository: CaQuick/caquick-be

Length of output: 524

🏁 Script executed:

# Check README.md content
cat README.md

Repository: CaQuick/caquick-be

Length of output: 5098

🏁 Script executed:

# Check the database configuration file
cat -n src/config/database.config.ts | head -100

Repository: CaQuick/caquick-be

Length of output: 571

🏁 Script executed:

# Search for .env files more broadly
fd -HI '\\.env' | head -20

Repository: CaQuick/caquick-be

Length of output: 44

🏁 Script executed:

# Look for documentation files that might contain setup instructions
fd -HI '(CONTRIBUTING|SETUP|INSTALL|docs)' | head -20

Repository: CaQuick/caquick-be

Length of output: 190

🏁 Script executed:

# Check if there's a .github directory with documentation
find .github -type f 2>/dev/null | head -20

Repository: CaQuick/caquick-be

Length of output: 519

🏁 Script executed:

# Search for any DATABASE_URL or database setup documentation in the entire repo
rg -l 'DATABASE_URL|local.*development|docker.*setup' --max-count 20

Repository: CaQuick/caquick-be

Length of output: 112

🏁 Script executed:

# Check prisma/schema.prisma for any documentation
cat prisma/schema.prisma

Repository: CaQuick/caquick-be

Length of output: 42446

🏁 Script executed:

# Check package.json for setup scripts or documentation
cat package.json | head -50

Repository: CaQuick/caquick-be

Length of output: 1835

DATABASE_URL 환경변수 설정 가이드가 필수입니다.

src/config/database.config.ts (Lines 13-22)에서 DATABASE_URL이 설정되지 않으면 애플리케이션 시작 시 예외를 던집니다. docker-compose만 추가되면 MySQL은 정상 구동되지만 앱은 실패하게 되므로, README 또는 .env.example 파일에 다음과 같은 연결 문자열 예시를 반드시 추가하세요:

DATABASE_URL=mysql://caquick:caquick@localhost:3306/CaQuick
🤖 Prompt for AI Agents 
Verify each finding against the current code and only fix it if needed.

In `@docker-compose.yml` around lines 1 - 21, Add a required DATABASE_URL example
to project docs and env samples so the app won’t throw on startup when MySQL is
brought up by docker-compose; update README and .env.example to include the
connection string (e.g. mysql://caquick:caquick@localhost:3306/CaQuick) and
mention it’s required because src/config/database.config.ts throws if
DATABASE_URL is not set, and note that the docker-compose mysql service must
match those credentials/host/port.

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