Add Dockerfile into Vatz

Dockerfile

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+# Start from the official Golang image based on Debian
+FROM golang:1.20-buster as builder
+
+# Set the Current Working Directory inside the container
+WORKDIR /app/vatz
+
+# Copy the entire project into the container
+COPY . .
+
+# Run the Makefile to build the application
+RUN make build
+
+# Run vatz init to initialize the application (this should generate the binary)
+RUN ./vatz init
+
+# Start a new stage from scratch
+FROM alpine:latest
+
+WORKDIR /root/
+
+# Copy the Pre-built binary file from the previous stage
+COPY --from=builder /app/vatz/vatz ./vatz
+
+# Expose port 8080 (or whatever port your application uses)
+EXPOSE 8080
+
+# Command to start the application, expecting a config.yaml file to be provided at runtime
+CMD ["./vatz", "start", "--config", "/config/config.yaml"]