.travis.yml

language: bash

services:
- docker

env:
  global:
  - PROJECT_NAME=rust
  - IMAGE_NAME=$DOCKER_USERNAME/$PROJECT_NAME
  
before_script:
- set -e
- if [ "$TRAVIS_PULL_REQUEST" = "false" ]; then
    docker login -u="$DOCKER_USERNAME" -p="$DOCKER_PASSWORD";
  fi

script:
- docker build -t $IMAGE_NAME .

after_success:
- |
  docker run --rm -it $IMAGE_NAME bash -c \
  " \
  cargo fmt --version \
  && cargo clippy --version \
  "
- export STABLE_RUST_VER=$(docker run --rm -it $IMAGE_NAME rustc --version |
    grep -oE "[[:digit:]]+\.[[:digit:]]+\.[[:digit:]]")
- echo $STABLE_RUST_VER
- export STABLE_TAG=$STABLE_RUST_VER
- docker tag $IMAGE_NAME $IMAGE_NAME:$STABLE_TAG;
- |
  if [ "$TRAVIS_PULL_REQUEST" = "false" ]; then
    docker push $IMAGE_NAME:$STABLE_TAG;
    docker push $IMAGE_NAME;
  fi

branches:
  only:
  - master