gitolite: Refactor Dockerfile for debian base

Building from debian:latest will make for a smaller image, a faster
build, and will make the image more accessible to a wider variety of
platforms.

The effort started by 19e7dc8932c is expanded upon such that the image
cleanly bakes in all static config files into the image - ie. the entire
hosting user's home directory, except for the repositories directory.
This removal of config management from the gitolite-admin repo is part
of the reason why it is being decoupled from this repo.

The gitolite image will now never utilize a user pubkey during build.
Instead, it can be invoked with an alternative entrypoint to
interactively configure a new install.

Signed-off-by: Malfurious <m@lfurio.us>

1 files changed, 15 insertions, 0 deletions

diff --git a/gitolite/entrypoint.sh b/gitolite/entrypoint.sh
new file mode 100755
index 0000000..613a968
--- /dev/null
+++ b/gitolite/entrypoint.sh
@@ -0,0 +1,15 @@
+#!/bin/sh
+
+# On startup of the gitolite container, force a receive of the gitolite-admin
+# files from the persistent volume, to cause the user's real pubkeys and config
+# files to take effect.
+main() {
+    sleep 5
+    ssh -o StrictHostKeyChecking=accept-new git@localhost info # cache hostkey
+    git clone --bare git@localhost:gitolite-admin.git /tmp/gladmin.git
+    git --git-dir=/tmp/gladmin.git push origin :master # remove rmt master
+    git --git-dir=/tmp/gladmin.git push origin master  # replace rmt master
+}
+
+main &
+/usr/sbin/sshd -D