docker support and readme

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+# Use an official Go image as the builder
+FROM golang:1.24-alpine AS builder
+
+WORKDIR /app
+
+# Copy go mod and sum first
+COPY go.mod go.sum ./
+RUN go mod download
+
+# Copy the source code
+COPY . .
+
+# Build the Go app
+RUN go build -o mintube .
+
+# Final lightweight image
+FROM alpine:latest
+
+WORKDIR /app
+COPY --from=builder /app/mintube .
+COPY --from=builder /app/templates ./templates
+COPY --from=builder /app/static ./static
+
+# If your app needs ports exposed (e.g., a web server)
+EXPOSE 8080
+
+# Run the Go app
+CMD ["./mintube"]