make buildfile.reader.Execute() execute each instruction + log errors

internal/buildfile/reader.go

@@ -4,6 +4,7 @@ import (
 	"bufio"
 	"errors"
 	"fmt"
+	"git.xdrm.io/go/nix-amer/internal/clifmt"
 	"git.xdrm.io/go/nix-amer/internal/instruction"
 	"io"
 	"strings"
@@ -80,5 +81,15 @@ func (r *Reader) Execute() error {
 		return fmt.Errorf("cannot upgrade | %s", err)
 	}
 
+	// 3. exec each instruction
+	for i, inst := range r.Content {
+		_, err := inst.Exec(*r.Context)
+		if err != nil {
+			fmt.Printf("%d | %s\n", i, err)
+			continue
+		}
+		fmt.Printf("%d | %s\n", i, clifmt.Color(32, "done"))
+	}
+
 	return nil
 }