add new docs version 7.10.x

docs/versioned_docs/version-7.10.x/installation.md

@@ -0,0 +1,32 @@
+---
+id: installation
+title: Installation
+---
+
+1.  Choose how to deploy:
+
+    a. Using a [Prebuilt Binary](https://github.com/oauth2-proxy/oauth2-proxy/releases) (current release is `v7.9.0`)
+
+    b. Using Go to install the latest release
+    ```bash
+    $ go install github.com/oauth2-proxy/oauth2-proxy/v7@latest
+    ```
+    This will install the binary into `$GOPATH/bin`. Make sure you include `$GOPATH` in your `$PATH`. Otherwise your system won't find binaries installed via `go install`
+
+    c. Using a [Prebuilt Docker Image](https://quay.io/oauth2-proxy/oauth2-proxy) (AMD64, PPC64LE, S390x, ARMv6, ARMv7, and ARM64 available)
+
+    d. Using a [Pre-Release Nightly Docker Image](https://quay.io/oauth2-proxy/oauth2-proxy-nightly) (AMD64, PPC64LE, ARMv6, ARMv7, and ARM64 available)
+
+    e. Using the official [Kubernetes manifest](https://github.com/oauth2-proxy/manifests) (Helm)
+
+    Prebuilt binaries can be validated by extracting the file and verifying it against the `sha256sum.txt` checksum file provided for each release starting with version `v3.0.0`.
+    
+    ```
+    $ sha256sum -c sha256sum.txt
+    oauth2-proxy-x.y.z.linux-amd64: OK
+    ```
+
+2.  [Select a Provider and Register an OAuth Application with a Provider](configuration/providers/index.md)
+3.  [Configure OAuth2 Proxy using config file, command line options, or environment variables](configuration/overview.md)
+4.  [Configure SSL or Deploy behind an SSL endpoint](configuration/tls.md) (example provided for Nginx)
+5.  [Configure OAuth2 Proxy using systemd.socket](configuration/systemd_socket.md) (example provided for Nginx/Systemd)