docs: add installation quickstart (#24)

---------

Signed-off-by: Miguel Martinez Trivino <[email protected]>

Author: migmartri

README.md

@@ -13,6 +13,22 @@ Developer teams, on the other hand, do not need to become security experts, the
 
 To learn more about the project motivation please look at [this blog post](https://docs.chainloop.dev/blog/introducing-chainloop) and see it in action in [this video](https://docs.chainloop.dev/blog/software-supply-chain-attestation-easy-way#see-it-in-action).
 
+## Getting started
+
+See the getting started [guide](https://docs.chainloop.dev/getting-started/installation) for detailed information on downloading and configuring the Chainloop Command Line Interface (CLI)
+
+In a nutshell:
+
+```bash
+$ curl -sfL https://docs.chainloop.dev/install.sh | bash -s
+
+$ chainloop auth login
+```
+
+> NOTE: You can also build and run Chainloop [from source](./CONTRIBUTING.md)
+
+> Once you've been logged in, follow [these instructions](https://docs.chainloop.dev/getting-started/setup) to learn how to set up your account.
+
 ## How does it work?
 
 ### Compliant Single Source of Truth
@@ -43,7 +59,7 @@ Operators can set up third-party integrations such as [Dependency-Track](https:/
 
 Ops can mix and match with different integrations while **not requiring developers to make any changes on their side**!
 
-## Role-tailored experience
+### Role-tailored experience
 
 Chainloop makes sure to clearly define the responsibilities, experience and functional scope of the **two main personas, Security/Operation (SecOps) and Development/Application teams**.
 
@@ -60,7 +76,8 @@ To learn more, please visit the Chainloop project's documentation website, https
 Chainloop is developed in the open and is constantly improved by our users, contributors and maintainers. Got a question, comment, or idea? Please don't hesitate to reach out via:
 
 - GitHub [Issues](https://github.com/chainloop-dev/chainloop/issues)
-- [Discord Community Server](https://discord.gg/f7atkaZact)
+- Discord [Community Server](https://discord.gg/f7atkaZact)
+- Youtube [Channel](https://www.youtube.com/channel/UCISrWrPyR_AFjIQYmxAyKdg)
 
 ## Contributing
 

internal/blobmanager/oci/backend.go

@@ -61,7 +61,7 @@ func NewBackend(repository string, regOpts *RegistryOptions) (*Backend, error) {
 }
 
 // Exists check that the artifact is already present in the repository and it points to the
-// same image digest, meaning it has not been repushed/replaced
+// same image digest, meaning it has not been re-pushed/replaced
 // This method is very naive so signatures will be used in future releases
 func (b *Backend) Exists(ctx context.Context, digest string) (bool, error) {
 	if digest == "" {
@@ -74,7 +74,7 @@ func (b *Backend) Exists(ctx context.Context, digest string) (bool, error) {
 	}
 
 	// It's not trivial to catch if the error is a 404 (yeah I know...) so we will assume that
-	// any error means no and will be catched in the next stage when we try to upload the image
+	// any error means no and will be caught in the next stage when we try to upload the image
 	image, err := remote.Image(ref, remote.WithAuthFromKeychain(b.keychain))
 	if err != nil {
 		// Image is not there