Dokcer Image Makefile

Makefile

# The Project namespace, wshihadeh by default
NAMESPACE ?= wshihadeh

# Image name: simply we can use the application name
IMAGE_NAME := simple-rails

# The URL of Docker registry used to host the image.
REGISTRY ?= index.docker.io

# Docker image full name
IMAGE_FULL_NAME := ${REGISTRY}/${NAMESPACE}/${NAME}

# Get the branch name using git if it is not provided.
BRANCH ?= $$(git symbolic-ref --short HEAD)

# Create an image tag based on the branch name
BRANCH_TAG := $$(echo ${BRANCH} | tr / _)

# Get the last commit hash on the used branch
COMMIT_HASH := $$(git rev-parse HEAD)

# The Command used to start the container
COMMAND := rails server

# Ports to expose when starting the container
PORT := -p 8080:8080

# Define any environment variables needed to start container here
CONTAINER_ENV= -e RAILS_ENV=production  -e RAILS_LOG_TO_STDOUT=true

# Set build parameters
BUILD_PARAMS := --pull --label com.revision=${COMMIT_HASH}

# Set build args
BUILD_ARGS := --build-arg APP_VERSION=$$(git describe --abbrev=0 --tags)

# Get ruby version
RUBY_VERSION := $$(<.ruby-version)

# Get ruby gemset name
RUBY_GEMSET := $$(<.ruby-gemset)

# Make sure recipes are always executed
.PHONY: config build push run clean shell start stop release

config:
    @echo "Running configuration ..."; \
    rvm --create ruby-${RUBY_VERSION}@${RUBY_GEMSET}_${BRANCH_TAG} && rvm info ruby,environment; \
    rvm use ruby-${RUBY_VERSION}@${RUBY_GEMSET}_${BRANCH_TAG}; \
    bundle package --all-platforms --all --no-install ;

build:
    @echo "Building Docker Image ..."; \
    echo "Branch: " ${BRANCH}; \
    echo "Commit hash: " ${COMMIT_HASH}; \
    docker build ${BUILD_PARAMS} ${BUILD_ARGS} -t ${IMAGE_FULL_NAME}:${COMMIT_HASH} . ; \
    docker tag ${IMAGE_FULL_NAME}:${COMMIT_HASH} ${IMAGE_FULL_NAME}:${BRANCH_TAG};

shell:
    docker run --rm --name ${NAME}-${BRANCH_TAG} ${CONTAINER_ENV} -it ${PORT} ${IMAGE_FULL_NAME}:${COMMIT_HASH} sh

run:
    docker run --rm --name ${NAME}-${BRANCH_TAG} ${CONTAINER_ENV} -it ${PORT} ${IMAGE_FULL_NAME}:${COMMIT_HASH} ${COMMAND}

start:
    docker run -d --name ${NAME}-${BRANCH_TAG} ${CONTAINER_ENV} ${PORT} ${IMAGE_FULL_NAME}:${COMMIT_HASH} ${COMMAND}

stop:
    docker rm -f ${NAME}-${BRANCH_TAG}

push:
    @echo "Pushing Docker image ..."; \
    docker push ${IMAGE_FULL_NAME}:${COMMIT_HASH}; \
    docker push ${IMAGE_FULL_NAME}:${BRANCH_TAG}; \
    if [[ "${BRANCH}" == "master" ]]; then \
      docker tag ${IMAGE_FULL_NAME}:${COMMIT_HASH} ${IMG}:latest; \
      docker push ${IMAGE_FULL_NAME}:latest; \
    fi

release: config build push

clean:
    @if [[ "${BRANCH}" == "master" ]]; then docker rmi -f ${IMAGE_FULL_NAME}:latest; fi; \
    docker rmi -f ${IMAGE_FULL_NAME}:${BRANCH_TAG}; \
    docker rmi -f ${IMAGE_FULL_NAME}:${COMMIT_HASH}; \
    rvm --force gemset delete ruby-${RUBY_VERSION}@${RUBY_GEMSET}_${BRANCH_TAG};