Update Dockerfile

Dockerfile

@@ -1,32 +1,14 @@
-FROM golang:1.20 AS builder
-
-# Set the Current Working Directory inside the container
+FROM golang:1.21-alpine AS builder
 WORKDIR /app
-
-# Copy go.mod and go.sum files
-COPY go.mod .
-COPY go.sum .
-
-# Download all dependencies. Dependencies will be cached if the go.mod and go.sum files are not changed
+COPY go.mod go.sum ./
 RUN go mod download
-
-# Copy the source code into the container
 COPY . .
+RUN CGO_ENABLED=0 GOOS=linux go build -o myapp .
+RUN chmod +x myapp  # 赋予执行权限
 
-# Build the Go app
-RUN go build -o main .
-
-# Start a new stage from scratch
 FROM alpine:latest
-
-# Set the Current Working Directory inside the container
-WORKDIR /root/
-
-# Copy the Pre-built binary file from the previous stage
-COPY --from=builder /app/main .
-
-# Expose port 8080 to the outside world
+WORKDIR /app
+COPY --from=builder /app/myapp .
 EXPOSE 8080
-
-# Command to run the executable
-CMD ["./main"]
+ENV AUTH_TOKEN=your_auth_token_here
+CMD ["./myapp"]