chore: explicit the Gotenberg version

Makefile

@@ -6,6 +6,7 @@ help: ## Show the help
 it: build build-tests ## Initialize the development environment
 
 GOLANG_VERSION=1.22
+GOTENBERG_VERSION=8.4.0
 APP_NAME=app
 APP_VERSION=snapshot
 APP_AUTHOR=app-author
@@ -17,36 +18,38 @@ GOLANGCI_LINT_VERSION=v1.56.2 # See https://github.com/golangci/golangci-lint/re
 build: ## Build the Gotenberg's Docker image
 	docker build \
 	--build-arg GOLANG_VERSION=$(GOLANG_VERSION) \
+	--build-arg GOTENBERG_VERSION=$(GOTENBERG_VERSION) \
 	--build-arg APP_NAME=$(APP_NAME) \
 	--build-arg APP_VERSION=$(APP_VERSION) \
 	--build-arg APP_AUTHOR=$(APP_AUTHOR) \
 	--build-arg APP_REPOSITORY=$(APP_REPOSITORY) \
-	-t $(DOCKER_REPOSITORY)/gotenberg:8-$(APP_NAME)-$(APP_VERSION) \
+	-t $(DOCKER_REPOSITORY)/gotenberg:$(GOTENBERG_VERSION)-$(APP_NAME)-$(APP_VERSION) \
 	-f build/Dockerfile .
 
 .PHONY: build-tests
 build-tests: ## Build the tests' Docker image
 	docker build \
 	--build-arg GOLANG_VERSION=$(GOLANG_VERSION) \
 	--build-arg DOCKER_REPOSITORY=$(DOCKER_REPOSITORY) \
+	--build-arg GOTENBERG_VERSION=$(GOTENBERG_VERSION) \
 	--build-arg APP_NAME=$(APP_NAME) \
 	--build-arg APP_VERSION=$(APP_VERSION) \
 	--build-arg GOLANGCI_LINT_VERSION=$(GOLANGCI_LINT_VERSION) \
-	-t $(DOCKER_REPOSITORY)/gotenberg:8-$(APP_NAME)-$(APP_VERSION)-tests \
+	-t $(DOCKER_REPOSITORY)/gotenberg:$(GOTENBERG_VERSION)-$(APP_NAME)-$(APP_VERSION)-tests \
 	-f test/Dockerfile .
 
 .PHONY: tests
 tests: ## Start the testing environment
 	docker run --rm -it \
 	-v $(PWD):/tests \
-	$(DOCKER_REPOSITORY)/gotenberg:8-$(APP_NAME)-$(APP_VERSION)-tests \
+	$(DOCKER_REPOSITORY)/gotenberg:$(GOTENBERG_VERSION)-$(APP_NAME)-$(APP_VERSION)-tests \
 	bash
 
 .PHONY: tests-once
 tests-once: ## Run the tests once (prefer the "tests" command while developing)
 	docker run --rm  \
 	-v $(PWD):/tests \
-	$(DOCKER_REPOSITORY)/gotenberg:8-$(APP_NAME)-$(APP_VERSION)-tests \
+	$(DOCKER_REPOSITORY)/gotenberg:$(GOTENBERG_VERSION)-$(APP_NAME)-$(APP_VERSION)-tests \
 	gotest
 
 # go install mvdan.cc/gofumpt@latest

build/Dockerfile

@@ -1,4 +1,5 @@
 ARG GOLANG_VERSION
+ARG GOTENBERG_VERSION
 
 FROM golang:$GOLANG_VERSION AS builder
 
@@ -18,21 +19,23 @@ COPY cmd ./cmd
 COPY pkg ./pkg
 
 # Build the binary.
+ARG GOTENBERG_VERSION
 ARG APP_NAME
 ARG APP_VERSION
 
-RUN go build -o gotenberg -ldflags "-X 'github.com/gotenberg/gotenberg/v8/cmd.Version=8-$APP_NAME-$APP_VERSION'" cmd/app/main.go
+RUN go build -o gotenberg -ldflags "-X 'github.com/gotenberg/gotenberg/v8/cmd.Version=$GOTENBERG_VERSION-$APP_NAME-$APP_VERSION'" cmd/app/main.go
 
-FROM gotenberg/gotenberg:8
+FROM gotenberg/gotenberg:$GOTENBERG_VERSION
 
+ARG GOTENBERG_VERSION
 ARG APP_AUTHOR
 ARG APP_REPOSITORY
 ARG APP_NAME
 ARG APP_VERSION
 
 LABEL org.opencontainers.image.title="Gotenberg $APP_NAME" \
       org.opencontainers.image.description="A Docker-powered stateless API for PDF files." \
-      org.opencontainers.image.version="$GOTENBERG_VERSION-$APP_VERSION" \
+      org.opencontainers.image.version="$GOTENBERG_VERSION-$APP_NAME-$APP_VERSION" \
       org.opencontainers.image.authors="$APP_AUTHOR" \
       org.opencontainers.image.source="$APP_REPOSITORY"
 

test/Dockerfile

@@ -1,5 +1,6 @@
 ARG GOLANG_VERSION
 ARG DOCKER_REPOSITORY
+ARG GOTENBERG_VERSION
 ARG APP_NAME
 ARG APP_VERSION
 ARG GOLANGCI_LINT_VERSION
@@ -8,7 +9,7 @@ FROM golang:$GOLANG_VERSION-bullseye as golang
 
 # We're extending the Gotenberg's Docker image because our code relies on external
 # dependencies like Google Chrome, LibreOffice, etc.
-FROM $DOCKER_REPOSITORY/gotenberg:8-$APP_NAME-$APP_VERSION
+FROM $DOCKER_REPOSITORY/gotenberg:$GOTENBERG_VERSION-$APP_NAME-$APP_VERSION
 
 USER root