Add CI Dockerfile

The image will be updated manually in the case of the changes. Always
strict version of the Docker image is used.

#108

.rultor.yml

@@ -1,6 +1,6 @@
 architect: extsoft
 docker:
-    image: extsoft/rultor-runtime:r24b04p0g2
+    image: extsoft/elegant-git-ci:1
     as_root: true
 merge:
     fast-forward: only

.travis.yml

@@ -1,6 +1,6 @@
 sudo: required
 language: bash
 services: docker
-script: docker run -t --rm -v $PWD:/src -w /src extsoft/rultor-runtime:r24b04p0g2 ./run-tests
+script: docker run -t --rm -v $PWD:/eg extsoft/elegant-git-ci:1 ./run-tests
 notifications:
   email: false

CONTRIBUTING.md

@@ -36,4 +36,10 @@ Use the following test name template - `'<command args>': <describe what will be
 Use one of the following commands to run the unit tests:
 - `bats src/test`
 - `./run-tests`
-- `docker run -t --rm -v $PWD:/src -w /src extsoft/rultor-runtime:r24b04p0g2 ./run-tests`
+- `docker run -t --rm -v $PWD:/eg extsoft/elegant-git-ci:1 ./run-tests`
+
+# CI
+CI execution is automated using Docker. If some changes are required to the CI docker image, please follow next:
+- update `Dockerfile` (including `version` and and `description`)
+- `docker build -t extsoft/elegant-git-ci:<version> .`
+- `docker push extsoft/elegant-git-ci:<version>`

Dockerfile

@@ -0,0 +1,9 @@
+FROM ruby:2.4.1-alpine3.6
+RUN apk update && \
+    apk upgrade && \
+    apk add --no-cache bats=0.4.0-r2 build-base libffi-dev ncurses git && \
+    gem install pdd
+LABEL maintainer="Dmytro Serdiuk <[email protected]>" \
+      description="ruby:2.4.1 git:2.13.5 0pdd:0.20.3" \
+      version=1
+WORKDIR /eg

install.bash

@@ -1,4 +1,5 @@
-#!/usr/bin/env bash -e
+#!/usr/bin/env bash
+set -e
 
 [ -z "$INSTALL_PATH" ] && INSTALL_PATH="$HOME/.git-elegant"
 [ -z "$REPO_HOME" ] && REPO_HOME="https://github.com/extsoft/elegant-git.git"