Add latest image

Dockerfile.latest

@@ -0,0 +1,10 @@
+# The latest Vim and Neovim releases.
+#
+# The Vim release (tag) is based on the Windows release at
+# http://www.vim.org/download.php (assuming this to be considered stable).
+#
+# This is available online at https://hub.docker.com/r/testbed/vim-latest/.
+FROM testbed/vim
+
+RUN install_vim -tag v8.1.0000 -name vim -py3 -build \
+                -tag neovim:v0.3.1 -py2 -py3 -build

Makefile

@@ -2,6 +2,7 @@
 
 DOCKER_REPO_BASE:=testbed/vim
 DOCKER_REPO_VIMS_DEFAULT:=testbed/vim-default
+DOCKER_REPO_VIMS_LATEST:=testbed/vim-latest
 
 TAG:=11
 
@@ -19,6 +20,11 @@ update_latest:
 	docker tag testbed/vim:$(TAG) testbed/vim:latest
 	docker push testbed/vim:latest
 
+build_latest:
+	docker build -f Dockerfile.latest -t $(DOCKER_REPO_VIMS_LATEST) .
+push_latest:
+	docker push $(DOCKER_REPO_VIMS_LATEST)
+
 # test: build the base image and example image on top, running tests therein.
 DOCKER_BASE_IMAGE:=vim-testbed-base
 test: