feat: [CDE-332]: Update the gitspace setup scripts to support more OSes (#2873)

* 

feat: [CDE-332]: fix lint
* 

feat: [CDE-332]: Update the gitspace setup scripts to support more OSes

app/gitspace/orchestrator/git/script/install_git.sh

@@ -1,7 +1,63 @@
 #!/bin/sh
 
-# Source the common OS info script
-. ../../common/script/os_info.sh
+# Detect OS type
+os() {
+  uname="$(uname)"
+  case $uname in
+    Linux) echo linux ;;
+    Darwin) echo macos ;;
+    FreeBSD) echo freebsd ;;
+    *) echo "$uname" ;;
+  esac
+}
+
+# Detect Linux distro type
+distro() {
+  local os_name
+  os_name=$(os)
+
+  if [ "$os_name" = "macos" ] || [ "$os_name" = "freebsd" ]; then
+    echo "$os_name"
+    return
+  fi
+
+  if [ -f /etc/os-release ]; then
+    (
+      . /etc/os-release
+      if [ "${ID_LIKE-}" ]; then
+        for id_like in $ID_LIKE; do
+          case "$id_like" in debian | fedora | opensuse | arch)
+            echo "$id_like"
+            return
+            ;;
+          esac
+        done
+      fi
+
+      echo "$ID"
+    )
+    return
+  fi
+}
+
+# Print a human-readable name for the OS/distro
+distro_name() {
+  if [ "$(uname)" = "Darwin" ]; then
+    echo "macOS v$(sw_vers -productVersion)"
+    return
+  fi
+
+  if [ -f /etc/os-release ]; then
+    (
+      . /etc/os-release
+      echo "$PRETTY_NAME"
+    )
+    return
+  fi
+
+  uname -sr
+}
+
 
 # Install Git if not already installed
 install_git() {

app/gitspace/orchestrator/ide/vscode.go

@@ -17,6 +17,7 @@ package ide
 import (
 	"context"
 	"fmt"
+	"os"
 	"strconv"
 
 	"github.com/harness/gitness/app/gitspace/orchestrator/devcontainer"
@@ -47,10 +48,15 @@ func (v *VSCode) Setup(
 	ctx context.Context,
 	exec *devcontainer.Exec,
 ) ([]byte, error) {
+	osInfoScript, err := os.ReadFile("app/gitspace/orchestrator/common/script/os_info.sh")
+	if err != nil {
+		return nil, fmt.Errorf("failed to read os_info.sh: %w", err)
+	}
 	sshServerScript, err := template.GenerateScriptFromTemplate(
 		templateSetupSSHServer, &template.SetupSSHServerPayload{
-			Username:   exec.UserIdentifier,
-			AccessType: exec.AccessType,
+			Username:     exec.UserIdentifier,
+			AccessType:   exec.AccessType,
+			OSInfoScript: string(osInfoScript),
 		})
 	if err != nil {
 		return nil, fmt.Errorf(

app/gitspace/orchestrator/template/template.go

@@ -53,15 +53,17 @@ type RunVSCodeWebPayload struct {
 }
 
 type SetupUserPayload struct {
-	Username   string
-	AccessKey  string
-	AccessType enum.GitspaceAccessType
-	HomeDir    string
+	Username     string
+	AccessKey    string
+	AccessType   enum.GitspaceAccessType
+	HomeDir      string
+	OSInfoScript string
 }
 
 type SetupSSHServerPayload struct {
-	Username   string
-	AccessType enum.GitspaceAccessType
+	Username     string
+	AccessType   enum.GitspaceAccessType
+	OSInfoScript string
 }
 
 type RunSSHServerPayload struct {

app/gitspace/orchestrator/template/templates/manage_user.sh

@@ -1,12 +1,12 @@
 #!/bin/sh
 
-# Source the common OS info script
-. ../../common/script/os_info.sh
-
 username={{ .Username }}
 accessKey="{{ .AccessKey }}"
 homeDir={{ .HomeDir }}
 accessType={{ .AccessType }}
+osInfoScript={{ .OSInfoScript }}
+
+eval "$osInfoScript"
 
 # Check if the user already exists
 if id "$username" >/dev/null 2>&1; then

app/gitspace/orchestrator/template/templates/setup_ssh_server.sh

@@ -1,7 +1,8 @@
 #!/bin/sh
 
-# Source the common OS info script
-. ../../common/script/os_info.sh
+osInfoScript={{ .OSInfoScript }}
+
+eval "$osInfoScript"
 
 # Install SSH if it's not already installed
 if ! command -v sshd >/dev/null 2>&1; then

app/gitspace/orchestrator/user/user_impl.go

@@ -17,6 +17,7 @@ package user
 import (
 	"context"
 	"fmt"
+	"os"
 
 	"github.com/harness/gitness/app/gitspace/orchestrator/devcontainer"
 	"github.com/harness/gitness/app/gitspace/orchestrator/template"
@@ -34,12 +35,17 @@ func NewUserServiceImpl() Service {
 }
 
 func (u *ServiceImpl) Manage(ctx context.Context, exec *devcontainer.Exec) ([]byte, error) {
+	osInfoScript, err := os.ReadFile("app/gitspace/orchestrator/common/script/os_info.sh")
+	if err != nil {
+		return nil, fmt.Errorf("failed to read os_info.sh: %w", err)
+	}
 	script, err := template.GenerateScriptFromTemplate(
 		templateManagerUser, &template.SetupUserPayload{
-			Username:   exec.UserIdentifier,
-			AccessKey:  exec.AccessKey,
-			AccessType: exec.AccessType,
-			HomeDir:    exec.HomeDir,
+			Username:     exec.UserIdentifier,
+			AccessKey:    exec.AccessKey,
+			AccessType:   exec.AccessType,
+			HomeDir:      exec.HomeDir,
+			OSInfoScript: string(osInfoScript),
 		})
 	if err != nil {
 		return nil, fmt.Errorf(