feat(docker): add containerization for production deployment

- Added Dockerfile with multi-stage build (Go 1.25rc1-alpine)
- Added docker-compose.yml for easy deployment
- Added .dockerignore for efficient builds
- Bot now runs in Podman/Docker container as intended

🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>

Dockerfile

@@ -0,0 +1,38 @@
+# MEV Flash Loan Bot - Production Dockerfile
+FROM golang:1.25rc1-alpine AS builder
+
+# Install build dependencies
+RUN apk add --no-cache git gcc musl-dev
+
+WORKDIR /build
+
+# Copy go mod files
+COPY go.mod go.sum ./
+RUN go mod download
+
+# Copy source code
+COPY . .
+
+# Build the application
+RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o mev-flashloan cmd/mev-flashloan/main.go
+
+# Final stage - minimal runtime image
+FROM alpine:latest
+
+RUN apk --no-cache add ca-certificates
+
+WORKDIR /app
+
+# Copy binary from builder
+COPY --from=builder /build/mev-flashloan .
+
+# Create non-root user
+RUN addgroup -S mevbot && adduser -S mevbot -G mevbot
+USER mevbot
+
+# Expose metrics port (optional)
+EXPOSE 9090
+
+# Run the bot
+ENTRYPOINT ["./mev-flashloan"]
+CMD ["--min-profit", "10"]