add script to build docker images

build-container.sh

@@ -0,0 +1,123 @@
+#!/bin/bash
+set -eo pipefail
+
+SCRIPT_NAME=$(basename "$0")
+SCRIPT_PATH=$(dirname "$(realpath "$0")")
+
+IMAGE_REGISTRY="hobbyfarm"
+IMAGE_TAG="latest"
+PLATFORM="linux/amd64"
+DOCKER_PUSH_COMMAND=""
+SERVICE_BASE_PATH="$SCRIPT_PATH/v3/services"
+SERVICE_DOCKERFILE="$SCRIPT_PATH/v3/Dockerfile"
+GARGANTUA_DOCKERFILE="$SCRIPT_PATH/Dockerfile"
+
+function print_help() {
+  echo "Usage:"
+  echo "  $SCRIPT_NAME [options] [service_name...]"
+  echo ""
+  echo "Examples:"
+  echo "$0                            - builds all images"
+  echo "$0 costsvc gargantua          - builds costsvc and gargantua image (names of services match services in $SERVICE_BASE_PATH)"
+  echo "$0 -p linux/arm64,linux/arm64 - builds all images with for linux/arm64"
+  echo "$0 -r my-hobbyfarm            - builds all images with registry my-hobbyfarm in image name e.g. my-hobbyfarm/cost-service:latest"
+  echo "$0 --push                     - pushes the built images to the docker registry"
+  echo "$0 -t v0.0.1                  - builds all images with image tag v0.0.1 e.g. hobbyfarm/cost-service:v0.0.1"
+  echo ""
+  echo "Options:"
+  echo "  -p, --platform OS/ARCH[/VARIANT]        define the OS/ARCH[/VARIANT] of the image (default is $PLATFORM)"
+  echo "  -r, --image-registry IMAGE_REGISTRY     define the image registry (default is $IMAGE_REGISTRY)"
+  echo "  -t, --image-tag IMAGE_TAG               define the image tag (default is $IMAGE_TAG)"
+  echo "  --push                                  enable push of built images (disabled per default)"
+  echo "  -h, --help                              print help"
+}
+
+SERVICES=()
+
+while [[ $# -gt 0 ]]; do
+  case $1 in
+    -r|--image-registry)
+      IMAGE_REGISTRY="$2"
+      shift # past argument
+      shift # past value
+      ;;
+    -p|--platform)
+      PLATFORM="$2"
+      shift # past argument
+      shift # past value
+      ;;
+    -t|--image-tag)
+      IMAGE_TAG="$2"
+      shift # past argument
+      shift # past value
+      ;;
+    --push)
+      DOCKER_PUSH_COMMAND="--push"
+      shift # past argument
+      ;;
+    -h|--help)
+      print_help
+      exit 0
+      ;;
+    -*)
+      echo "Unknown option $1"
+      exit 1
+      ;;
+    *)
+      SERVICES+=("$1") # save positional arg
+      shift # past argument
+      ;;
+  esac
+done
+
+set -- "${SERVICES[@]}" # restore positional parameters
+
+DOCKER_COMMAND="docker"
+DOCKER_BUILD_COMMAND="buildx build"
+
+# check if podman should be used
+if ! command -v "$DOCKER_COMMAND" > /dev/null 2>&1
+then
+    DOCKER_COMMAND="podman"
+    DOCKER_BUILD_COMMAND="build --platform"
+fi
+# check if podman exists
+if ! command -v "$DOCKER_COMMAND" > /dev/null 2>&1
+then
+    >&2 echo "neither \"docker\" nor \"podman\" exists on the system"
+    exit 1
+fi
+
+cd "$SCRIPT_PATH"
+
+# no services specified, populate SERVICES array
+if (( ${#SERVICES[@]} == 0 )); then
+  SERVICES=("gargantua")
+  while IFS='' read -r service_name; do SERVICES+=("$service_name"); done < <(find "$SERVICE_BASE_PATH"/* -maxdepth 0 -type d -exec basename {} \;)
+fi
+
+# check if all services exist
+for service_name in "${SERVICES[@]}"; do
+  if [ "$service_name" != "gargantua" ]; then
+    service_path="$SERVICE_BASE_PATH/$service_name"
+    if [ ! -d "$service_path" ]; then
+      echo "service \"$service_name\" does not exist"
+      exit 1
+    fi
+  fi
+done
+
+# build specified services
+for service_name in "${SERVICES[@]}"; do
+  echo "building \"$service_name\""
+  echo ""
+
+  if [ "$service_name" = "gargantua" ]; then
+    $DOCKER_COMMAND $DOCKER_BUILD_COMMAND $DOCKER_PUSH_COMMAND --platform "$PLATFORM" --file "$GARGANTUA_DOCKERFILE" --tag "${IMAGE_REGISTRY}/${service_name}:${IMAGE_TAG}" .
+    echo ""
+  else
+    image_tag="${IMAGE_REGISTRY}/${service_name/%svc/-service}:${IMAGE_TAG}"
+    $DOCKER_COMMAND $DOCKER_BUILD_COMMAND $DOCKER_PUSH_COMMAND --platform "$PLATFORM" --build-arg SERVICE_NAME="$service_name" --file "$SERVICE_DOCKERFILE" --tag "$image_tag" .
+    echo ""
+  fi
+done