build-go.sh

#!/bin/bash

# Versions
GO_VERSION=1.16.3
ALPINE_VERSION=3.13
DOCKER_VERSION=20.10

# DIRECTORIES
DIRECTORY=${PWD}
OFFICIAL_IMAGES_DIRECTORY=${DIRECTORY}/official-images

# IMAGE
IMAGE_NAME=pvormste/docker-go
GO_MINOR_VERSION=${GO_VERSION%.*}

# Only show image names when desired
if [ $1 = 'show-latest' ]; then
  echo "${IMAGE_NAME}:${GO_VERSION}"
  exit 0;
fi

if [ $1 = 'show-minor' ]; then
  echo "${IMAGE_NAME}:${GO_MINOR_VERSION}"
  exit 0;
fi

# Check for docker command
if ! hash docker 2>/dev/null; then
  echo "ERROR: docker cli is not installed. aborting."
  exit 1
fi

# Build Image
cd ${DOCKER_VERSION}
docker build -t ${IMAGE_NAME}:${GO_VERSION} --build-arg GO_VERSION=${GO_VERSION} --build-arg ALPINE_VERSION=${ALPINE_VERSION} .
docker tag ${IMAGE_NAME}:${GO_VERSION} ${IMAGE_NAME}:${GO_MINOR_VERSION}

# Check if docker commands were successful
if [ ! $? = 0 ]; then
  echo "ERROR: docker command execution was not successful. aborting."
  exit 2
fi

# Test image
if [ ! -d "${OFFICIAL_IMAGES_DIRECTORY}" ]; then
  git clone https://github.com/docker-library/official-images.git ${OFFICIAL_IMAGES_DIRECTORY}
fi

cd ${OFFICIAL_IMAGES_DIRECTORY}
git pull
./test/run.sh ${IMAGE_NAME}:${GO_VERSION}
./test/run.sh ${IMAGE_NAME}:${GO_MINOR_VERSION}