use github-release instead of travis dpl

.travis.yml

@@ -1,15 +1,6 @@
-sudo: false
+install:
+- bash -e ${TRAVIS_BUILD_DIR}/.travis.yml.install
 script:
-- cd builder && RELEASE_VERSION="${TRAVIS_TAG:1}" ./build-latest
-deploy:
-  provider: releases
-  skip_cleanup: true
-  api_key:
-    secure: "XyKkvK7dmt9oVqcNaMojgw+vLQ0Q8VBf4K3LWgZHJJbPBUTrLRTNu5JXVB0kvmTZYSdVu7HHZ2LZJxsTac7frnzbMvNim0IfToJa4juW7fF50D+h84T1/T+fl4Q/OKWBDMW+GwhX4dSUygLAznojObwcxQjsSC5ARrBzlBpOjb0="
-  file:
-    - $HOME/dist/*.tar.gz
-  file_glob: true
-  on:
-    repo: just-containers/s6-overlay
-    branch: master
-    tags: true
+- bash -e ${TRAVIS_BUILD_DIR}/.travis.yml.script
+after_success:
+- bash -e ${TRAVIS_BUILD_DIR}/.travis.yml.after_success

.travis.yml.after_success

@@ -0,0 +1,24 @@
+#!/bin/bash
+set -e
+set -x
+
+# don't loop if files don't exist
+shopt -s nullglob
+
+# exit if TRAVIS_TAG is empty, no need to release anything
+if [ -z "${TRAVIS_TAG}" ]; then
+  exit 0
+fi
+
+# get user and repo names
+USERNAME=$(echo ${TRAVIS_REPO_SLUG} | cut -d"/" -f1)
+REPONAME=$(echo ${TRAVIS_REPO_SLUG} | cut -d"/" -f2)
+
+# release
+./github-release release --user "${USERNAME}" --repo "${REPONAME}" --tag "${TRAVIS_TAG}" --name "${TRAVIS_TAG}"
+
+# s6 overlay binaries
+for i in $HOME/dist/*.tar.gz; do
+  name=$(basename ${i})
+  ./github-release upload --user "${USERNAME}" --repo "${REPONAME}" --tag "${TRAVIS_TAG}" --name "${name}" --file "${i}"
+done

.travis.yml.install

@@ -0,0 +1,7 @@
+#!/bin/bash
+set -e
+set -x
+
+# download and untar github-release
+wget -nv -O github-release.amd64.tar.bz2 https://github.com/aktau/github-release/releases/download/v0.6.2/linux-amd64-github-release.tar.bz2
+tar xf github-release.amd64.tar.bz2 --strip-components=3

.travis.yml.script

@@ -0,0 +1,5 @@
+#!/bin/bash
+set -e
+set -x
+
+cd builder && RELEASE_VERSION="${TRAVIS_TAG:1}" ./build-latest