Add frontend build env (#9)

build-scripts/frontend-build-env/create_frontend_env.sh

@@ -0,0 +1,65 @@
+#!/bin/bash
+set -e
+
+DOCKER_IMAGE=${DOCKER_IMAGE:="homeassistant/frontend-build-env"}
+DOCKER_PUSH="false"
+
+# Get the absolute script location
+pushd "$(dirname "$0")" > /dev/null 2>&1
+SCRIPTPATH=$(pwd)
+popd > /dev/null 2>&1
+
+help () {
+    cat << EOF
+Script for hassio frontend build environment
+create_frontend_env [options]
+
+Options:
+    -h, --help
+        Display this help and exit.
+
+    -t, --tag TAG
+        Version/Tag of $DOCKER_IMAGE.
+    -p, --push
+        Upload the build to docker hub.
+EOF
+}
+
+# Parse arguments
+while [[ $# -gt 0 ]]; do
+    key=$1
+    case $key in
+        -h|--help)
+            help
+            exit 0
+            ;;
+        -t|--tag)
+            DOCKER_TAG=$2
+            shift
+            ;;
+        -p|--push)
+            DOCKER_PUSH="true"
+            ;;
+        *)
+            echo "[WARNING] $0 : Argument '$1' unknown. Ignoring."
+            ;;
+    esac
+    shift
+done
+
+if [ -z "$DOCKER_TAG" ]; then
+    echo "[ERROR] please set a tag!"
+    help
+    exit 1
+fi
+
+# Build
+docker build --pull --tag "$DOCKER_IMAGE:$DOCKER_TAG" -f "$SCRIPTPATH/Dockerfile" "$SCRIPTPATH"
+
+# Tag
+docker tag "$DOCKER_IMAGE:$DOCKER_TAG" "$DOCKER_IMAGE:latest"
+
+if [ "$DOCKER_PUSH" == "true" ]; then
+    docker push "$DOCKER_IMAGE:$DOCKER_TAG"
+    docker push "$DOCKER_IMAGE:latest"
+fi