build.sh

#!/usr/bin/env bash

bash --version 2>&1 | head -n 1

set -eo pipefail
SCRIPT_DIR=$(cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd)

###########################################################################
# CONFIGURATION
###########################################################################

BUILD_PROJECT_FILE="$SCRIPT_DIR/build/_build.csproj"
TEMP_DIRECTORY="$SCRIPT_DIR//.nuke/temp"

DOTNET_GLOBAL_FILE="$SCRIPT_DIR//global.json"
DOTNET_INSTALL_URL="https://dot.net/v1/dotnet-install.sh"
DOTNET_CHANNEL="Current"

export DOTNET_CLI_TELEMETRY_OPTOUT=1
export DOTNET_SKIP_FIRST_TIME_EXPERIENCE=1
export DOTNET_MULTILEVEL_LOOKUP=0

# Disable telemetry because it breaks the build on Linux since nuke 6.0.0
export NUKE_TELEMETRY_OPTOUT=1

###########################################################################
# EXECUTION
###########################################################################

function FirstJsonValue {
    perl -nle 'print $1 if m{"'"$1"'": "([^"]+)",?}' <<< "${@:2}"
}
trap "rm -f \"$DOTNET_GLOBAL_FILE\"" INT TERM EXIT

dotnetCliVersion=$(cat DotnetCliVersion.txt)

json="{\"sdk\":{\"version\":\"$dotnetCliVersion\"}}"
    echo "$json" > "$DOTNET_GLOBAL_FILE"

# If global.json exists, load expected version
if [[ -f "$DOTNET_GLOBAL_FILE" ]]; then
    DOTNET_VERSION=$dotnetCliVersion
fi

DOTNET_DIRECTORY="$TEMP_DIRECTORY/dotnet-unix"
export DOTNET_EXE="$DOTNET_DIRECTORY/dotnet"

# If dotnet CLI is installed globally and it matches requested version, use for execution
if [[ -x "$(command -v dotnet)" && (-z ${DOTNET_VERSION+x} || $(dotnet --version) == "$DOTNET_VERSION") ]]; then
    export DOTNET_EXE="$(command -v dotnet)"
elif [[ ! (-x "$DOTNET_EXE" && (-z ${DOTNET_VERSION+x} || $($DOTNET_EXE --version) == "$DOTNET_VERSION")) ]]; then

    # Download install script
    DOTNET_INSTALL_FILE="$TEMP_DIRECTORY/dotnet-install.sh"
    mkdir -p "$TEMP_DIRECTORY"

    if [ ! -x "$DOTNET_INSTALL_FILE" ]; then
        curl -Lsfo "$DOTNET_INSTALL_FILE" "$DOTNET_INSTALL_URL"
        chmod +x "$DOTNET_INSTALL_FILE"
    fi

    # Install by channel or version

    if [[ -z ${DOTNET_VERSION+x} ]]; then
        "$DOTNET_INSTALL_FILE" --install-dir "$DOTNET_DIRECTORY" --channel "$DOTNET_CHANNEL" --no-path
    else
        "$DOTNET_INSTALL_FILE" --install-dir "$DOTNET_DIRECTORY" --version "$DOTNET_VERSION" --no-path
    fi
fi

echo "Microsoft (R) .NET Core SDK version $("$DOTNET_EXE" --version)"

"$DOTNET_EXE" build "$BUILD_PROJECT_FILE" /nodeReuse:false /p:UseSharedCompilation=false -nologo -clp:NoSummary --verbosity quiet
"$DOTNET_EXE" run --project "$BUILD_PROJECT_FILE" --no-build -- "$@"