feat: support armhf & i386 architectures (#355)

Makefile

@@ -125,7 +125,7 @@ godoc: ## Run a webserver with Gotenberg godoc (go get golang.org/x/tools/cmd/go
 	godoc -http=:6060
 
 .PHONY: release
-release: ## Build the Gotenberg's Docker image for linux/amd64 and linux/arm64 platforms, then push it to a Docker repository
+release: ## Build the Gotenberg's Docker image for many platforms, then push it to a Docker repository
 	./scripts/release.sh \
  	$(GOLANG_VERSION) \
 	$(GOTENBERG_VERSION) \

build/Dockerfile

@@ -52,7 +52,7 @@ ARG NOTO_COLOR_EMOJI_VERSION
 ARG PDFTK_VERSION
 
 # Script for installing either Google Chrome stable on amd64 architecture or
-# Chromium on arm64 architecture.
+# Chromium on other architectures.
 # See https://github.com/gotenberg/gotenberg/issues/328.
 COPY build/install-chromium.sh /tmp/install-chromium.sh
 

scripts/release.sh

@@ -26,6 +26,8 @@ docker buildx build \
   --build-arg PDFTK_VERSION="$PDFTK_VERSION" \
   --platform linux/amd64 \
   --platform linux/arm64 \
+  --platform linux/arm/v7 \
+  --platform linux/386 \
   -t "$DOCKER_REPOSITORY/gotenberg:latest" \
   -t "$DOCKER_REPOSITORY/gotenberg:${SEMVER[0]}" \
   -t "$DOCKER_REPOSITORY/gotenberg:${SEMVER[0]}.${SEMVER[1]}" \
@@ -39,6 +41,8 @@ docker buildx build \
   --build-arg GOTENBERG_VERSION="$GOTENBERG_VERSION" \
   --platform linux/amd64 \
   --platform linux/arm64 \
+  --platform linux/arm/v7 \
+  --platform linux/386 \
   -t "$DOCKER_REPOSITORY/gotenberg:latest-cloudrun" \
   -t "$DOCKER_REPOSITORY/gotenberg:${SEMVER[0]}-cloudrun" \
   -t "$DOCKER_REPOSITORY/gotenberg:${SEMVER[0]}.${SEMVER[1]}-cloudrun" \