build: add labels to automate local build script

Release-As: 1.1.0
Signed-off-by: iromli <[email protected]>

Dockerfile

@@ -53,5 +53,12 @@ ENV PATH="/opt/google-cloud-sdk/bin:/opt/spannerbox/bin:$PATH" \
     SPANNER_DATABASE_ID=test-database \
     SPANNER_EMULATOR_HOST=0.0.0.0:9010
 
+LABEL org.opencontainers.image.url="iromli/spannerbox" \
+    org.opencontainers.image.authors="[email protected]" \
+    org.opencontainers.image.vendor="" \
+    org.opencontainers.image.version="1.1.0" \
+    org.opencontainers.image.title="Spannerbox" \
+    org.opencontainers.image.description="spannerbox is a set of tools to work with Spanner emulator"
+
 ENTRYPOINT ["tini", "-g", "--"]
 CMD ["emulator"]

Makefile

@@ -1,9 +1,10 @@
-# default image name
-IMAGE_NAME?=iromli/spannerbox
-VERSION=$(shell cat version.txt | cut -d '-' -f 1)-dev
+IMAGE_VERSION?=$(shell grep -Po 'org.opencontainers.image.version="\K.*?(?=")' Dockerfile)-dev
+IMAGE_URL=$(shell grep -Po 'org.opencontainers.image.url="\K.*?(?=")' Dockerfile)
+IMAGE?=${IMAGE_URL}:${IMAGE_VERSION}
 
-.DEFAULT_GOAL:=build
+.PHONY: test clean all build
+.DEFAULT_GOAL := build
 
 build:
-	@echo "[I] Building image ${IMAGE_NAME}:${VERSION}"
-	@docker build --rm --force-rm -t ${IMAGE_NAME}:${VERSION} .
+	@echo "[I] Building image ${IMAGE}"
+	@docker build --rm --force-rm -t ${IMAGE} .