added make distribution, updated travis and docker files

.docker/make/debian/Dockerfile

@@ -0,0 +1,22 @@
+FROM debian:latest
+
+MAINTAINER Nikita Sobolev (mail@sobolevn.me)
+
+# Dependencies and project initialization:
+
+RUN apt-get update && \
+    apt-get install -y man make git apt-transport-https && \
+    apt-get autoremove && apt-get autoclean
+
+# This will increase the container size, but speed up the build,
+# since this part will change, while the dependencies won't:
+
+RUN mkdir /code
+WORKDIR /code
+
+# Removing `origin` for good:
+
+RUN git clone -q https://github.com/sobolevn/git-secret.git && \
+    cd git-secret && git remote rm origin
+
+WORKDIR /code/git-secret

.travis.yml

@@ -1,6 +1,11 @@
 matrix:
   fast_finish: true
   include:
+    - os: linux
+      env: GITSECRET_DIST="make"; DOCKER_DIST="debian"
+      services: docker
+      sudo: required
+      language: ruby
     - os: linux
       env: GITSECRET_DIST="deb"; DOCKER_DIST="debian";
       services: docker

Makefile

@@ -127,3 +127,11 @@ deploy-rpm: build-rpm
 	@chmod +x "./utils/rpm/rpm-deploy.sh"; sync; \
 	export SECRET_PROJECT_ROOT="${PWD}"; \
 	"./utils/rpm/rpm-deploy.sh"
+
+# make:
+
+.PHONY: test-make-ci
+test-make-ci: clean install-test
+	@chmod +x "./utils/make/make-ci.sh"; sync; \
+	export SECRET_PROJECT_ROOT="${PWD}"; \
+	"./utils/make/make-ci.sh"

utils/make/make-ci.sh

@@ -0,0 +1,31 @@
+#!/usr/bin/env bash
+
+set -e
+
+# Note that this file is created for test purposes:
+# 1. It runs inside the Docker container
+# 2. It does not use `sudo` or anything
+# 3. If you would like to install a package with `make` on your system,
+#    see `Installation`
+
+source "${SECRET_PROJECT_ROOT}/utils/build-utils.sh"
+
+
+# Integration tests
+function integration_tests {
+  # Installing the package:
+  make build
+  make install
+
+  # Testing the installation:
+  which "git-secret"
+
+  # Test the manuals:
+  man --where "git-secret" # .7
+  man --where "git-secret-init" # .1
+}
+
+integration_tests
+
+# Unit tests:
+source "${SECRET_PROJECT_ROOT}/utils/tests.sh"