Add readme

README.md

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+# Git repository
+
+You're looking at it.
+
+This has been setup to allow SSH passthrough as described [here](https://docs.gitea.io/en-us/install-with-docker/).
+
+The file `gitea-ssh` is the one used in `/app/gitea/gitea`. That finds the IP of the container automatically.
+
+
+# [The rest of my docker-compose setup](/thomas/docker-server/)

gitea-ssh

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+#!/bin/sh
+IP=$(docker inspect -f '{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' gitea)
+ssh -o StrictHostKeyChecking=no git@$IP "SSH_ORIGINAL_COMMAND=\"$SSH_ORIGINAL_COMMAND\" $0 $@"