add build environment dockerfile

Signed-off-by: Petros Angelatos <petrosagg@gmail.com>

base-image/Dockerfile

@@ -0,0 +1,23 @@
+FROM ubuntu:15.04
+
+# Install the following utilities (required by openembedded)
+# http://www.openembedded.org/wiki/Getting_started#Ubuntu_.2F_Debian
+RUN apt-get update \
+	&& apt-get install -y \
+		build-essential \
+		chrpath \
+		cpio \
+		curl \
+		diffstat \
+		file \
+		gawk \
+		git-core \
+		libsdl1.2-dev \
+		python3 \
+		texinfo \
+		unzip \
+		wget \
+		xterm \
+	&& rm -rf /var/lib/apt/lists/*
+
+WORKDIR /usr/src/yocto/