Docker 是现代应用部署的主流方式，Gin 应用容器化非常简单。
FROM golang:1.21-alpine AS builder
WORKDIR /app
COPY go.mod go.sum ./
RUN go mod download
COPY . .
RUN CGO_ENABLED=0 GOOS=linux go build -o main .
FROM alpine:latest
RUN apk --no-cache add ca-certificates tzdata
WORKDIR /root/
COPY --from=builder /app/main .
COPY --from=builder /app/config ./config
ENV TZ=Asia/Shanghai
EXPOSE 8080
CMD ["./main"]
优化镜像大小：
FROM golang:1.21-alpine AS builder
WORKDIR /app
COPY go.mod go.sum ./
RUN go mod download
COPY . .
RUN CGO_ENABLED=0 GOOS=linux go build -ldflags="-w -s" -o main .
FROM scratch
COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
COPY --from=builder /app/main /main
EXPOSE 8080
ENTRYPOINT ["/main"]
version: '3.8'
services:
app:
build: .
ports:
- "8080:8080"
environment:
- GIN_MODE=release
- DB_HOST=db
- DB_PORT=3306
- DB_USER=root
- DB_PASSWORD=password
- DB_NAME=myapp
- REDIS_HOST=redis
- REDIS_PORT=6379
depends_on:
- db
- redis
restart: always
db:
image: mysql:8.0
environment:
- MYSQL_ROOT_PASSWORD=password
- MYSQL_DATABASE=myapp
volumes:
- db_data:/var/lib/mysql
ports:
- "3306:3306"
redis:
image: redis:7-alpine
ports:
- "6379:6379"
nginx:
image: nginx:alpine
ports:
- "80:80"
volumes:
- ./nginx.conf:/etc/nginx/nginx.conf
depends_on:
- app
volumes:
db_data:
FROM golang:1.21-alpine AS builder
# ... 构建步骤 ...
FROM alpine:latest
RUN apk --no-cache add curl
COPY --from=builder /app/main .
HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
CMD curl -f http://localhost:8080/health || exit 1
EXPOSE 8080
CMD ["./main"]
FROM alpine:latest
ENV GIN_MODE=release \
PORT=8080 \
LOG_LEVEL=info
COPY main .
EXPOSE ${PORT}
CMD ["./main"]
.git
.gitignore
.env
.env.*
*.md
Makefile
Dockerfile
docker-compose.yml
.idea
.vscode
*.test
*.out
tmp/
logs/
deployment.yaml：
apiVersion: apps/v1
kind: Deployment
metadata:
name: gin-app
spec:
replicas: 3
selector:
matchLabels:
app: gin-app
template:
metadata:
labels:
app: gin-app
spec:
containers:
- name: gin-app
image: myapp:latest
ports:
- containerPort: 8080
env:
- name: GIN_MODE
value: "release"
- name: DB_HOST
valueFrom:
secretKeyRef:
name: db-secret
key: host
resources:
requests:
memory: "128Mi"
cpu: "100m"
limits:
memory: "256Mi"
cpu: "200m"
livenessProbe:
httpGet:
path: /health
port: 8080
initialDelaySeconds: 5
periodSeconds: 10
readinessProbe:
httpGet:
path: /health
port: 8080
initialDelaySeconds: 5
periodSeconds: 10
---
apiVersion: v1
kind: Service
metadata:
name: gin-app-service
spec:
selector:
app: gin-app
ports:
- port: 80
targetPort: 8080
type: LoadBalancer
# 构建镜像
docker build -t myapp:latest .
# 运行容器
docker run -d -p 8080:8080 --name myapp myapp:latest
# 查看日志
docker logs -f myapp
# 使用 docker-compose
docker-compose up -d
docker-compose logs -f app
Docker 部署 Gin 应用简单高效。使用多阶段构建可以大幅减小镜像体积。docker-compose 适合本地开发和测试，Kubernetes 适合生产环境。记得配置健康检查，让容器编排系统能正确管理应用。