Remove upg branch dependency

Makefile: separate testupg binary from build-linux
Update README.md

Makefile

@@ -49,10 +49,6 @@ BUILD_FLAGS := -tags "$(build_tags)" -ldflags '$(ldflags)'
 build:
 	go build -mod=readonly $(BUILD_FLAGS) -o build/emd$(BIN_PREFIX) ./cmd/emd
 
-emdupg:
-	docker run --rm --entrypoint cat emoney/test-upg /go/src/em-ledger/build/emd > "build/emdupg"
-	chmod +x "build/emdupg"
-
 cosmovisor:
 	go install github.com/cosmos/cosmos-sdk/cosmovisor/cmd/cosmovisor@latest
 
@@ -73,16 +69,17 @@ install:
 build-test-upg:
 	docker run --rm --entrypoint cat emoney/cosmovisor /go/bin/cosmovisor > build/cosmovisor
 	chmod +x build/cosmovisor
+	docker run --rm --entrypoint cat emoney/test-upg /go/src/em-ledger/build/emd > "build/emdupg"
+	chmod +x "build/emdupg"
 	docker run --rm --entrypoint cat emoney/test-upg /go/src/em-ledger/build/emd-linux > "build/emdupg-linux"
 	chmod +x "build/emdupg-linux"
-	sed -i -e '/bep3.NewKeeper/r networks/upg/upgfunc.txt' app.go
 
 build-linux:
 	# Linux images for docker-compose
 	# CGO_ENABLED=0 added to solve this issue: https://stackoverflow.com/a/36308464
 	BIN_PREFIX=-linux LEDGER_ENABLED=false GOOS=linux GOARCH=amd64 $(MAKE) build
 
-build-all: build-linux emdupg
+build-all: build-linux build-test-upg
 	$(MAKE) build
 
 build-docker:
@@ -118,7 +115,7 @@ license:
 	GO111MODULE=off go get github.com/google/addlicense/
 	addlicense -f LICENSE .
 
-.PHONY: build build-linux emdupg cosmovisor clean test bdd-test build-docker license
+.PHONY: build build-linux build-test-upg cosmovisor clean test bdd-test build-docker license
 
 ###############################################################################
 ###                                Protobuf                                 ###

networks/docker/Makefile

@@ -9,7 +9,7 @@ cosmovisor:
 	docker build cosmovisor --tag emoney/cosmovisor
 
 test-upg:
-	docker build test-upg --tag emoney/test-upg
+	docker build test-upg --build-arg branch=$$(git rev-parse --abbrev-ref HEAD) --build-arg version=test-upg-0.2.0 --tag emoney/test-upg
 
 # todo (reviewer): please note the rest-server is not a command anymore. Please enable `api` section in `app.toml` instead
 

networks/docker/test-upg/Dockerfile

@@ -1,10 +1,15 @@
 FROM golang:1.16-buster
 
+ARG branch
+ARG version
+
 # checkout and build linux binary
 RUN cd /go/src && \
     git clone https://github.com/e-money/em-ledger.git && \
     cd em-ledger && \
-    git checkout test-upg-0.2.0 && \
+    git checkout $branch && \
+   	sed -i -e '/bep3.NewKeeper/r networks/upg/upgfunc.txt' app.go && \
+    git tag $version && \
     BIN_PREFIX=-linux LEDGER_ENABLED=false GOOS=linux GOARCH=amd64 make build
 
 # build MacOS binary

networks/upg/README.md

@@ -7,7 +7,7 @@ Please note if you'd rather test the upgrade module within the **e-money local-t
 ```shell
 cd em-ledger
 make build-docker
-make build-linux
+make build-all
 go test -v --tags="bdd" bdd_test.go upgrade_test.go
 ```
 
@@ -22,6 +22,7 @@ Note these scripts at **em-ledger/networks/upg**:
 * `startcv` (starts a single e-money node with cosmovisor)
 * `upg-sched` schedule an upgrade by passing the upgrade block height 
 * `upg-sched-srv` optional documentation setup and schedule command for upgrading with server downloaded binary
+* `upgfunc.txt` Go snippet to be inserted as the upgrade module handler in the *upgrade* binary.
 
 ### Components installation
 Build the revamped Docker, Linux artifacts