remove arm/v7 build and special symlinks to support it

Dockerfile

@@ -24,10 +24,6 @@ RUN cd cmd/sso-proxy/generate-request-signature && go build -mod=readonly -o /bi
 # add static assets and copy binaries from build stage
 # =============================================================================
 FROM debian:stable-slim
-RUN ln -s /usr/bin/dpkg-split /usr/sbin/dpkg-split
-RUN ln -s /usr/bin/dpkg-deb /usr/sbin/dpkg-deb
-RUN ln -s /bin/tar /usr/sbin/tar
-RUN ln -s /bin/rm /usr/sbin/rm
 RUN apt-get update && apt-get install -y ca-certificates curl && rm -rf /var/lib/apt/lists/* \
     && groupadd -r sso && useradd -r -g sso sso
 WORKDIR /sso

Makefile

@@ -29,22 +29,22 @@ imagepush-commit:
 	docker context create sso-dev
 	docker buildx create sso-dev --name sso-dev
 	docker buildx use sso-dev
-	docker buildx build --tag buzzfeed/sso-dev:$(commit) . --platform linux/amd64,linux/arm64,linux/arm/v7 --push
+	docker buildx build --tag buzzfeed/sso-dev:$(commit) . --platform linux/amd64,linux/arm64 --push
 	docker buildx rm sso-dev
 
 imagepush-latest:
 	docker context create sso-dev
 	docker buildx create sso-dev --name sso-dev
 	docker buildx use sso-dev
-	docker buildx build --tag buzzfeed/sso-dev:latest . --platform linux/amd64,linux/arm64,linux/arm/v7 --push
+	docker buildx build --tag buzzfeed/sso-dev:latest . --platform linux/amd64,linux/arm64 --push
 	docker buildx rm sso-dev
 
 releasepush:
 	docker context create sso-dev
 	docker buildx create sso-dev --name sso-dev
 	docker buildx use sso-dev
-	docker buildx build --tag buzzfeed/sso:$(version) . --platform linux/amd64,linux/arm64,linux/arm/v7 --push
-	docker buildx build --tag buzzfeed/sso:latest . --platform linux/amd64,linux/arm64,linux/arm/v7 --push
+	docker buildx build --tag buzzfeed/sso:$(version) . --platform linux/amd64,linux/arm64 --push
+	docker buildx build --tag buzzfeed/sso:latest . --platform linux/amd64,linux/arm64 --push
 	docker buildx rm sso-dev
 
 .PHONY: dist/sso-auth dist/sso-proxy tools