Use Mix.Shell.IO helpers to print msgs to the terminal

lib/mix/tasks/music_library/prod/db_migrate.ex

@@ -11,7 +11,7 @@ defmodule Mix.Tasks.MusicLibrary.Prod.DbMigrate do
 
   @impl Mix.Task
   def run(_args) do
-    IO.puts("Running migrations on production database")
+    Mix.Shell.IO.info("Running migrations on production database")
 
     fly_ssh("bin/migrate")
   end

lib/mix/tasks/music_library/prod/db_pull.ex

@@ -10,7 +10,7 @@ defmodule Mix.Tasks.MusicLibrary.Prod.DbPull do
 
   @impl Mix.Task
   def run(_args) do
-    IO.puts("Pulling the latest database from the production server")
+    Mix.Shell.IO.info("Pulling the latest database from the production server")
 
     current_time = DateTime.utc_now()
     remote_db = "/mnt/music_library/music_library_prod.db"
@@ -18,13 +18,13 @@ defmodule Mix.Tasks.MusicLibrary.Prod.DbPull do
 
     case fly_sftp_get(remote_db, local_db) do
       {_stream, 1} ->
-        IO.puts("Failed to pull the database")
+        Mix.Shell.IO.error("Failed to pull the database")
         System.halt(1)
 
       {_stream, 0} ->
-        IO.puts("Database pulled successfully")
+        Mix.Shell.IO.info("Database pulled successfully")
 
-        IO.puts("Restoring as local dev database")
+        Mix.Shell.IO.info("Restoring as local dev database")
 
         Path.wildcard("data/music_library_dev.db*")
         |> Enum.each(&File.rm!/1)

lib/mix/tasks/music_library/prod/db_vacuum.ex

@@ -12,7 +12,7 @@ defmodule Mix.Tasks.MusicLibrary.Prod.DbVacuum do
 
   @impl Mix.Task
   def run(_args) do
-    IO.puts("Running VACUUM on the production database")
+    Mix.Shell.IO.info("Running VACUUM on the production database")
 
     command = ~s(bin/music_library rpc 'MusicLibrary.Repo.query\("VACUUM"\)')
 

lib/mix/tasks/music_library/prod/helpers.ex

@@ -3,7 +3,7 @@ defmodule Mix.Tasks.MusicLibrary.Prod.Helpers do
     if flyctl_installed?() do
       System.cmd("flyctl", ["ssh", "console", "--command", command], into: IO.stream())
     else
-      IO.puts("Please install flyctl first")
+      Mix.Shell.IO.error("Please install flyctl first")
       System.halt(1)
     end
   end
@@ -12,7 +12,7 @@ defmodule Mix.Tasks.MusicLibrary.Prod.Helpers do
     if flyctl_installed?() do
       System.cmd("flyctl", ["ssh", "sftp", "get", remote_path, local_path], into: IO.stream())
     else
-      IO.puts("Please install flyctl first")
+      Mix.Shell.IO.error("Please install flyctl first")
       System.halt(1)
     end
   end