Fix docs dev build when dependencies are not installed (#915)

Make sure dependencies are properly installed before building

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## Type of change

<!--- Please check the type of change your PR introduces: --->
- [ ] 🌻 Feature
- [x] 🐛 Bugfix
- [ ] 🗺️ Documentation
- [ ] 🤖 Test
- [ ] 💻 CI/Deployment
- [ ] 🐹 Trivial/Minor

## Issue(s)

## Test Plan

<!-- How will this be tested prior to merging.-->
- [x] 💪 Manual
- [ ] ⚡ Unit test
- [ ] 💚 E2E

docs/Makefile

@@ -54,6 +54,13 @@ genclidocs: ${MDGEN_BINARY}
 
 ${MDGEN_BINARY}: $(shell find ../src -type f -name *.go) $(shell find ../src -type d )
 	@echo 'Re-building Corso CLI docs auto-gen tooling...'
+	docker run --rm -it \
+		-v ${CORSO_REPO}:${CORSO_REPO_CONTAINER} -v ${CORSO_BUILD_DIR}:${CORSO_BUILD_DIR} \
+		--env GOCACHE=${CORSO_BUILD_CACHE} --env GOMODCACHE=${CORSO_BUILD_MOD} --env GOTMPDIR=${CORSO_BUILD_DIR} \
+		--workdir ${CORSO_REPO_CONTAINER}/src \
+		--entrypoint /usr/local/go/bin/go \
+		golang:1.18 \
+		mod tidy
 	docker run --rm -it \
 		-v ${CORSO_REPO}:${CORSO_REPO_CONTAINER} -v ${CORSO_BUILD_DIR}:${CORSO_BUILD_DIR} \
 		--env GOCACHE=${CORSO_BUILD_CACHE} --env GOMODCACHE=${CORSO_BUILD_MOD} --env GOTMPDIR=${CORSO_BUILD_DIR} \