Remove references to centos7

Author: webmaster128

README.md

@@ -90,7 +90,8 @@ go build .
 CGO_ENABLED=0 go build .
 ```
 
-In the case that it may be desirable to compile with cgo, but with libwasmvm linking disabled an additional build tag is available.
+In the case that it may be desirable to compile with cgo, but with libwasmvm
+linking disabled an additional build tag is available.
 
 ```sh
 # Build with CGO, but with libwasmvm linking disabled
@@ -106,8 +107,8 @@ The Rust implementation of the VM is compiled to a library called libwasmvm.
 This is then linked to the Go code when the final binary is built. For that
 reason not all systems supported by Go are supported by this project.
 
-Linux (tested on Ubuntu, Debian, and CentOS7, Alpine) and macOS is supported. We
-are working on Windows (#288).
+Linux (tested on Ubuntu, Debian, Alpine) and macOS is supported. We are working
+on Windows support with very low priority (#288).
 
 [#288]: https://github.com/CosmWasm/wasmvm/pull/288
 

builders/Makefile

@@ -2,10 +2,6 @@
 # See builders/README.md
 BUILDERS_PREFIX := cosmwasm/go-ext-builder:0019
 
-.PHONY: docker-image-centos7
-docker-image-centos7:
-	docker build --pull . -t $(BUILDERS_PREFIX)-centos7 -f ./Dockerfile.centos7
-
 .PHONY: docker-image-debian
 docker-image-debian:
 	docker build --pull . -t $(BUILDERS_PREFIX)-debian -f ./Dockerfile.debian
@@ -19,11 +15,10 @@ docker-image-alpine:
 	docker build --pull . -t $(BUILDERS_PREFIX)-alpine -f ./Dockerfile.alpine
 
 .PHONY: docker-images
-docker-images: docker-image-centos7 docker-image-debian docker-image-cross docker-image-alpine
+docker-images: docker-image-debian docker-image-cross docker-image-alpine
 
 .PHONY: docker-publish
 docker-publish: docker-images
 	docker push $(BUILDERS_PREFIX)-cross
-	docker push $(BUILDERS_PREFIX)-centos7
 	docker push $(BUILDERS_PREFIX)-debian
 	docker push $(BUILDERS_PREFIX)-alpine

docs/COMPILER_VERSIONS.md

@@ -45,7 +45,7 @@ ensure we can switch between compiler versions in some range.
 ## Production Rust compiler
 
 This is the version set in the builders: `builders/Dockerfile.alpine`,
-`builders/Dockerfile.centos7` and `Dockerfile.cross`.
+`builders/Dockerfile.debian` and `Dockerfile.cross`.
 
 ## Min Rust compiler