update.sh

#!/bin/bash
set -eo pipefail

declare -A base=(
    [alpine]='alpine'
)

declare -A version_suffixes=(
    [3]='-stable'
    [4]='-stable'
    [5]='-stable'
    [6]=''
)

declare -A dockerVariant=(
    [buster]='debian'
    [buster-slim]='debian-slim'
    [alpine]='alpine'
)

variants=(
    alpine
)

min_version='4.2'
dockerLatest='6.0'
dockerDefaultVariant='alpine'


# version_greater_or_equal A B returns whether A >= B
function version_greater_or_equal() {
    [[ "$(printf '%s\n' "$@" | sort -V | head -n 1)" != "$1" || "$1" == "$2" ]];
}

dockerRepo="monogramm/docker-taiga-front-base"
latests=( $( curl -fsSL 'https://api.github.com/repos/taigaio/taiga-front-dist/tags' |tac|tac| \
    grep -oE '[[:digit:]]+\.[[:digit:]]+\.[[:digit:]]+' | \
    sort -urV )
    4.2.14 )

# Remove existing images
echo "reset docker images"
rm -rf ./images/
mkdir ./images/

echo "update docker images"
readmeTags=
githubEnv=
travisEnv=
for latest in "${latests[@]}"; do
    version=$(echo "$latest" | cut -d. -f1-2)
    major=$(echo "$latest" | cut -d. -f1-1)

    # Only add versions >= "$min_version"
    if version_greater_or_equal "$version" "$min_version"; then

        for variant in "${variants[@]}"; do
            # Create the version+variant directory with a Dockerfile.
            dir="images/$version/$variant"
            if [ -d "$dir" ]; then
                continue
            fi

            echo "generating $latest [$version] $variant"
            mkdir -p "$dir"

            template="Dockerfile.${base[$variant]}"
            cp "template/$template" "$dir/Dockerfile"

            # Copy the scripts
            for name in entrypoint.sh .env docker-compose.test.yml .dockerignore; do
                cp "template/$name" "$dir/$name"
                chmod 755 "$dir/$name"
            done

            # Copy the configuration
            cp -r "template/conf" "$dir"

            cp -r "template/hooks" "$dir/"
            cp -r "template/test" "$dir/"

            # Replace the variables.
            sed -ri -e '
                s/%%VERSION_SUFFIX%%/'"${version_suffixes[$major]}"'/g;
                s/%%VARIANT%%/'"$variant"'/g;
                s/%%VERSION%%/'"$latest"'/g;
                s/%%MAJOR_VERSION%%/'"$version"'/g;
            ' "$dir/Dockerfile" "$dir/docker-compose.test.yml"

            sed -ri -e '
                s|DOCKER_TAG=.*|DOCKER_TAG='"$version"'|g;
                s|DOCKER_REPO=.*|DOCKER_REPO='"$dockerRepo"'|g;
            ' "$dir/hooks/run"

            # Create a list of "alias" tags for DockerHub post_push
            tagVariant=${dockerVariant[$variant]}
            if [ "$version" = "$dockerLatest" ]; then
                if [ "$tagVariant" = "$dockerDefaultVariant" ]; then
                    export DOCKER_TAGS="$latest-$tagVariant $version-$tagVariant $tagVariant $latest $version latest "
                else
                    export DOCKER_TAGS="$latest-$tagVariant $version-$tagVariant $tagVariant "
                fi
            elif [ "$version" = "$latest" ]; then
                if [ "$tagVariant" = "$dockerDefaultVariant" ]; then
                    export DOCKER_TAGS="$latest-$tagVariant $latest "
                else
                    export DOCKER_TAGS="$latest-$tagVariant "
                fi
            else
                if [ "$tagVariant" = "$dockerDefaultVariant" ]; then
                    export DOCKER_TAGS="$latest-$tagVariant $version-$tagVariant $latest $version "
                else
                    export DOCKER_TAGS="$latest-$tagVariant $version-$tagVariant "
                fi
            fi
            echo "${DOCKER_TAGS} " > "$dir/.dockertags"

            # Add README tags
            readmeTags="$readmeTags\n-   ${DOCKER_TAGS} (\`$dir/Dockerfile\`)"

            # Add GitHub Actions env var
            githubEnv="'$version', $githubEnv"

            # Add Travis-CI env var
            travisEnv='\n    - VERSION='"$version"' VARIANT='"$variant$travisEnv"

            if [[ $1 == 'build' ]]; then
                tag="$version-$variant"
                echo "Build Dockerfile for ${tag}"
                docker build -t "${dockerRepo}:${tag}" "${dir}"
            fi

        done

    fi

done

# update README.md
sed '/^<!-- >Docker Tags -->/,/^<!-- <Docker Tags -->/{/^<!-- >Docker Tags -->/!{/^<!-- <Docker Tags -->/!d}}' README.md > README.md.tmp
sed -e "s|<!-- >Docker Tags -->|<!-- >Docker Tags -->\n$readmeTags\n|g" README.md.tmp > README.md
rm README.md.tmp

# update .github workflows
sed -i -e "s|version: \[.*\]|version: [${githubEnv}]|g" .github/workflows/hooks.yml

# update .travis.yml
travis="$(awk -v 'RS=\n\n' '$1 == "env:" && $2 == "#" && $3 == "Environments" { $0 = "env: # Environments'"$travisEnv"'" } { printf "%s%s", $0, RS }' .travis.yml)"
echo "$travis" > .travis.yml