dev: initial environment

fedora, centos and ubuntu

* fewer layers
* systemd-dev
* basic pieces for building docker everytime
* centos updates
* better automated build

ubuntu-dev/Dockerfile.in

@@ -0,0 +1,20 @@
+FROM FROM_IMAGE
+
+RUN useradd -m -u 1000 -G sudo DEV_USER && \
+	sed -ri 's/^(%sudo.*)(ALL)$/\1NOPASSWD: \2/' /etc/sudoers && \
+	apt-get update && \
+	apt-get install -y \
+		git \
+		golang \
+		mercurial \
+		bzr \
+		vim \
+		sudo \
+		screen \
+		python-tox \
+		keychain && \
+	apt-get dist-upgrade -y
+USER DEV_USER
+ENV HOME /home/DEV_USER
+WORKDIR /home/DEV_USER
+CMD bash -l

ubuntu-dev/Makefile

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+
+DOCKER		?= $(shell which docker)
+FROM_IMAGE	?= ubuntu
+FROM_TAG	?= latest
+FROM		:= $(FROM_IMAGE):$(FROM_TAG)
+REGISTRY	?= docker.usersys
+NAME		?= $(REGISTRY)/$(USER)/$(FROM_IMAGE)-dev:$(FROM_TAG)
+
+default: build
+
+Dockerfile: Dockerfile.in
+	m4 --define=DEV_USER=$(USER) --define=FROM_IMAGE=$(FROM) $< > $@
+
+build: .build
+
+.build: Dockerfile .pull
+	$(DOCKER) build -t $(NAME) . && touch $@
+
+pull: .pull
+
+.pull:
+	$(DOCKER) pull $(FROM) && touch $@
+
+clean:
+	rm -rf .build .pull Dockerfile *~
+

ubuntu-dev/from

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+ubuntu:14.04