MonoGame does not generate xnb from png

Question

I am coming straight from XNA and I installed the latest version of MonoGame today (2015-12-22) for Visual Studio 2015 Community. I created a project from the windows Project template.

I right click the content folder and add a png-file. I compile without error but it stops during runtime because it can't find the content file. My solution look like this

Game1.cs look like this:

using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework.Input;

namespace homer
{
    public class Game1 : Game
    {
        GraphicsDeviceManager graphics;
        SpriteBatch spriteBatch;
        private Texture2D simpson;

        public Game1()
        {
            graphics = new GraphicsDeviceManager(this);
            Content.RootDirectory = "Content";
        }

        protected override void Initialize()
        {
            base.Initialize();
        }

        protected override void LoadContent()
        {
            spriteBatch = new SpriteBatch(GraphicsDevice);
            simpson = Content.Load<Texture2D>(@"Images/Homer");
        }

        protected override void UnloadContent(){ }

        protected override void Update(GameTime gameTime)
        {
            if (Keyboard.GetState().IsKeyDown(Keys.Escape))
                Exit();
            base.Update(gameTime);
        }

        protected override void Draw(GameTime gameTime)
        {
            GraphicsDevice.Clear(Color.CornflowerBlue);
            spriteBatch.Begin(SpriteSortMode.FrontToBack, BlendState.AlphaBlend);
            spriteBatch.Draw(simpson, new Vector2(200, 100), Color.White);
            spriteBatch.End();
            base.Draw(gameTime);
        }
    }
}

The problem I encounter is that MonoGame do not make xnb-files from the png and put it in my output folder. I tried to copy the file manually from a compiled XNA project to my MonoGame debug folder and it worked. I have done nothing but create a project from the template and trying to load an image. What do I need to do to make MonoGame compile xnb-files for me. It also runs if I change "Do not copy" to "Copy always" but that is not optimal for runtime as I understand it. Also, I don't want it to be too easy for the users to doodle in the graphics.

Content.mgcb look like this

#----------------------------- Global Properties ----------------------------#

/outputDir:bin/Windows
/intermediateDir:obj/Windows
/platform:Windows
/config:
/profile:Reach
/compress:False

#-------------------------------- References --------------------------------#


#---------------------------------- Content ---------------------------------#

Answer 1

Open the Content.mgcb file with the ContentPipeline tool. From there you can add the .png file and the content will be build for you.

The content pipeline tool is located on my machine in: "C:\Program Files (x86)\MSBuild\MonoGame\v3.0\Tools\Pipeline.exe"