Create Docker build pipeline for MacOS

build/share/rhemawave/shaders/text.frag

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+#version 330 core
+
+// The final color output for the pixel
+out vec4 FragColor;
+
+// Input from the vertex shader
+in vec2 TexCoord; // The texture coordinate, interpolated for this specific pixel
+
+// The source texture (our FontMap "sticker sheet")
+uniform sampler2D u_texture;
+uniform vec4 u_textColor;
+
+void main()
+{
+    float mask = texture(u_texture, TexCoord).a;
+    FragColor = vec4(u_textColor.rgb, u_textColor.a * mask);
+}