Dockerfile.koyeb

# Koyeb-optimized Dockerfile for Analyzer Gateway
FROM golang:1.25-alpine AS builder

# Install build dependencies + debugging tools
RUN apk add --no-cache \
    git \
    ca-certificates \
    tzdata \
    bash \
    curl \
    file

WORKDIR /app

# Copy go mod files first (better caching)
COPY go.mod go.sum ./
RUN go mod download && go mod verify

# Copy source code
COPY . .

# Create dist directory for binary
RUN mkdir -p dist

# Build the application with verbose output
RUN echo "🏗️  Building analyzer binary..." && \
    CGO_ENABLED=0 GOOS=linux GOARCH=amd64 \
    go build -v -ldflags="-w -s -X main.version=$(date +%Y%m%d_%H%M%S)" \
    -o dist/analyzer_linux_amd64 cmd/main.go

# Verify and debug binary
RUN echo "🔍 Verifying binary..." && \
    ls -la /app/dist/ && \
    file /app/dist/analyzer_linux_amd64 && \
    /app/dist/analyzer_linux_amd64 --version && \
    echo "✅ Binary verification completed!"

#########################################
# Final production stage
#########################################
FROM alpine:latest

# Install runtime dependencies
RUN apk --no-cache add \
    ca-certificates \
    curl \
    bash \
    tzdata \
    && update-ca-certificates

# Create non-root user with home directory
RUN addgroup -g 1001 -S analyzer && \
    adduser -u 1001 -S analyzer -G analyzer -h /home/analyzer

# Create app directory and set permissions
WORKDIR /app
RUN mkdir -p /app/config /app/logs && \
    chown -R analyzer:analyzer /app

# Copy binary from builder
COPY --from=builder /app/dist/analyzer_linux_amd64 ./analyzer

# Copy configuration files
COPY --chown=analyzer:analyzer config/ ./config/

# Ensure binary is executable
RUN chmod +x ./analyzer

# Switch to non-root user
USER analyzer

# Expose port (Koyeb will map this)
EXPOSE 8080

# Add labels for better Docker management
LABEL maintainer="Rafael Mori <faelmori@gmail.com>"
LABEL description="Kubex Analyzer Gateway - Multi-provider AI analysis platform"
LABEL version="1.0.9"

# Health check with retry logic
HEALTHCHECK --interval=30s --timeout=10s --start-period=30s --retries=5 \
    CMD curl -f http://localhost:8080/healthz || exit 1

# Command to run with better error handling
CMD ["./analyzer", "gateway", "serve", "--config", "./config/koyeb.yml"]