I just installed the latest on CentOS 8 and having the exact same issue, the admin and sso containers are unhealthy.
My error in bitwarden-admin log file:
System.Data.SqlClient.SqlException (0x80131904): A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: TCP Provider, error: 40 - Could not open a connection to SQL Server)
at System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, UInt32 waitForMultipleObjectsTimeout, Boolean allowCreate, Boolean onlyOneCheckConnection, DbConnectionOptions userOptions, DbConnectionInternal& connection)
at System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, TaskCompletionSource1 retry, DbConnectionOptions userOptions, DbConnectionInternal& connection) at System.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnection owningConnection, TaskCompletionSource1 retry, DbConnectionOptions userOptions, DbConnectionInternal oldConnection, DbConnectionInternal& connection)
at System.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource1 retry, DbConnectionOptions userOptions) at System.Data.ProviderBase.DbConnectionClosed.TryOpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource1 retry, DbConnectionOptions userOptions)
at System.Data.SqlClient.SqlConnection.TryOpen(TaskCompletionSource`1 retry)
at System.Data.SqlClient.SqlConnection.Open()
at Bit.Migrator.DbMigrator.MigrateMsSqlDatabase(Boolean enableLogging, CancellationToken cancellationToken) in /home/runner/work/server/server/util/Migrator/DbMigrator.cs:line 41
at Bit.Admin.HostedServices.DatabaseMigrationHostedService.StartAsync(CancellationToken cancellationToken) in /home/runner/work/server/server/src/Admin/HostedServices/DatabaseMigrationHostedService.cs:line 40
ClientConnectionId:00000000-0000-0000-0000-000000000000
info: Bit.Migrator.DbMigrator[12482444]
Migrating database.