Merge pull request #1024 from Zilliqa/fix-docker-build

Makefile

@@ -157,7 +157,7 @@ dev-deps:
 opamdep-ci:
 	opam init --disable-sandboxing --compiler=$(OCAML_VERSION) --yes
 	eval $$(opam env)
-	opam install ./scilla.opam --deps-only --with-test --yes
+	opam install ./scilla.opam --deps-only --with-test --no-depexts --yes
 	opam install ocamlformat.$(OCAMLFORMAT_VERSION) --yes
 
 .PHONY : coverage