add Dockerfile

.dockerignore

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+# Binaries
+tclp
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+
+# Test binary, built with `go test -c`
+*.test
+
+# Output of the go coverage tool
+*.out
+
+# Dependency directories
+vendor/
+
+# Go workspace file
+go.work
+
+# IDE files
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+
+# OS generated files
+.DS_Store
+.DS_Store?
+._*
+.Spotlight-V100
+.Trashes
+ehthumbs.db
+Thumbs.db
+
+# Git
+.git/
+.gitignore
+
+# Docker
+Dockerfile*
+.dockerignore
+
+# Documentation
+README.md
+*.md
+
+# Logs
+*.log
+
+# Temporary files
+tmp/
+temp/

Dockerfile

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+# Build stage
+FROM golang:1.24.1-alpine AS builder
+
+# Install build dependencies
+RUN apk add --no-cache git ca-certificates tzdata
+
+# Set working directory
+WORKDIR /app
+
+# Copy go mod files first for better caching
+COPY go.mod go.sum ./
+
+# Download dependencies
+RUN go mod download
+
+# Copy source code
+COPY . .
+
+# Build the application
+RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o tclp ./cmd
+
+# Runtime stage
+FROM alpine:3.19
+
+# Install runtime dependencies
+RUN apk --no-cache add ca-certificates tzdata
+
+# Create non-root user
+RUN addgroup -g 1001 -S appgroup && \
+    adduser -u 1001 -S appuser -G appgroup
+
+# Set working directory
+WORKDIR /app
+
+# Copy binary from builder stage
+COPY --from=builder /app/tclp .
+
+# Create directories for configuration and certificates
+RUN mkdir -p /app/config /app/certs && \
+    chown -R appuser:appgroup /app
+
+# Switch to non-root user
+USER appuser
+
+# Expose the default gRPC port
+EXPOSE 9000
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
+    CMD nc -z localhost 9000 || exit 1
+
+# Default command
+ENTRYPOINT ["./tclp"]
+CMD ["--config", "/app/config/config.yaml"]