Add force rebuild option (#329)

Former-commit-id: 1443c6c6d2

docs/cli.md

@@ -1,3 +1,48 @@
 # laconic-so
 
 Sub-commands and flags
+
+## build-containers
+
+Build a single container:
+```
+$ laconic-so build-containers --include <container-name>
+```
+e.g.
+```
+$ laconic-so build-containers --include cerc/go-ethereum
+```
+Build the containers for a stack:
+```
+$ laconic-so --stack <stack-name> build-containers
+```
+e.g.
+```
+$ laconic-so --stack fixturenet-eth build-containers
+```
+Force full rebuild of container images:
+```
+$ laconic-so build-containers --include <container-name> --force-rebuild
+```
+## build-npms
+
+Build a single package:
+```
+$ laconic-so build-npms --include <package-name>
+```
+e.g.
+```
+$ laconic-so build-npms --include laconic-sdk
+```
+Build the packages for a stack:
+```
+$ laconic-so --stack <stack-name> build-npms
+```
+e.g.
+```
+$ laconic-so --stack fixturenet-laconicd build-npms
+```
+Force full rebuild of packages:
+```
+$ laconic-so build-npms --include <package-name> --force-rebuild
+```