docker: 1.12.6 -> 1.13.0

- Update docker version to 1.13.0.
- Introduce now docker-proxy package (from libnetmork).
- Use overrideDerivation to set the correct version for docker.
- Update tini to make sure we can build it static.

Signed-off-by: Vincent Demeester <vincent@sbr.pm>

pkgs/applications/virtualization/docker/proxy.nix

@@ -0,0 +1,36 @@
+{ stdenv, lib, fetchFromGitHub, go, docker }:
+
+with lib;
+
+stdenv.mkDerivation rec {
+  name = "docker-proxy-${rev}";
+  rev = "0f534354b813003a754606689722fe253101bc4e";
+
+  src = fetchFromGitHub {
+    inherit rev;
+    owner = "docker";
+    repo = "libnetwork";
+    sha256 = "1ah7h417llcq0xzdbp497pchb9m9qvjhrwajcjb0ybrs8v889m31";
+  };
+
+  buildInputs = [ go ];
+
+  buildPhase = ''
+    mkdir -p .gopath/src/github.com/docker
+    ln -sf $(pwd) .gopath/src/github.com/docker/libnetwork
+    GOPATH="$(pwd)/.gopath:$(pwd)/Godeps/_workspace" go build -ldflags="$PROXY_LDFLAGS" -o docker-proxy ./cmd/proxy
+  '';
+
+  installPhase = ''
+    mkdir -p $out/bin
+    cp docker-proxy $out/bin
+  '';
+
+  meta = {
+    description = "Docker proxy binary to forward traffic between host and containers";
+    license = licenses.asl20;
+    homepage = https://github.com/docker/libnetwork;
+    maintainers = with maintainers; [vdemeester];
+    platforms = docker.meta.platforms;
+  };
+}