New approach to Gogs Docker Container

- VOLUME for ‘/data’
- Usage of S6 as PID 1 Process
- Usage of ‘socat’ so linked container (like databases) are binded to
localhost
- OpenSSH, Socat Link and Gogs are supervised using S6
- Size of container reduced to ~75Mo

docker/s6/.s6-svscan/finish

@@ -0,0 +1,2 @@
+#!/bin/sh
+exec /bin/true

docker/s6/gogs/run

@@ -0,0 +1,28 @@
+#!/bin/sh
+USER=git
+USERNAME=$USER
+
+if ! test -d /data/gogs; then
+	mkdir -p /data/gogs/data /data/gogs/conf /data/gogs/log /data/git
+fi
+
+if ! test -d ~git/.ssh; then
+    mkdir ~git/.ssh
+    chmod 700 ~git/.ssh
+fi
+
+if ! test -f ~git/.ssh/environment; then
+    echo "GOGS_CUSTOM=/data/gogs" > ~git/.ssh/environment
+    chown git:git ~git/.ssh/environment
+    chown 600 ~git/.ssh/environment
+fi
+
+ln -sf /data/gogs/log  /app/gogs/log
+ln -sf /data/gogs/data /app/gogs/data
+ln -sf /data/gogs/conf /app/gogs/conf
+
+chown -R git:git /data /app/gogs ~git/
+
+export USER
+export USERNAME
+exec gosu $USER /app/gogs/gogs web

docker/s6/openssh/run

@@ -0,0 +1,15 @@
+#!/bin/sh
+
+if ! test -d /data/ssh
+then
+	mkdir -p /data/ssh
+	ssh-keygen -q -f /data/ssh/ssh_host_key -N '' -t rsa1
+	ssh-keygen -q -f /data/ssh/ssh_host_rsa_key -N '' -t rsa
+	ssh-keygen -q -f /data/ssh/ssh_host_dsa_key -N '' -t dsa
+	ssh-keygen -q -f /data/ssh/ssh_host_ecdsa_key -N '' -t ecdsa
+	ssh-keygen -q -f /data/ssh/ssh_host_ed25519_key -N '' -t ed25519
+	chown -R root:root /data/ssh/*
+	chmod 600 /data/ssh/*
+fi
+
+exec gosu root /usr/sbin/sshd -D -f /etc/ssh/sshd_config