Remove references to v1 from other topics

Signed-off-by: Usha Mandya <usha.mandya@docker.com>

compose/compose-file/compose-file-v2.md

@@ -998,7 +998,7 @@ options:
 
 > Changed in [version 2](compose-versioning.md#version-2) file format.
 >
-> The `network_mode` option replaces the version 1 [net](compose-file-v1.md#net) option.
+> The `network_mode` option replaces the Compose file version 1 net option.
 
 Network mode. Use the same values as the docker client `--network` parameter, plus
 the special form `service:[service name]`.
@@ -1023,7 +1023,7 @@ network_mode: "container:[container name/id]"
 
 > Changed in [version 2](compose-versioning.md#version-2) file format.
 >
-> The `networks` option replaces the version 1 [net](compose-file-v1.md#net) option.
+> The `networks` option replaces the Compose file version 1 net option.
 
 Networks to join, referencing entries under the
 [top-level `networks` key](#network-configuration-reference).

compose/compose-file/compose-versioning.md

@@ -14,7 +14,7 @@ The Compose file formats are now described in these references, specific to each
 | [Compose Specification](index.md) (most current, and recommended) | [Versioning](compose-versioning.md#versioning)  |
 | [Version 3](compose-file-v3.md)                       | [Version 3 updates](#version-3)  |
 | [Version 2](compose-file-v2.md)                       | [Version 2 updates](#version-2)  |
-| [Version 1](compose-file-v1.md)                       | [Version 1 updates](#version-1)  |
+| Version 1 (Deprecated)                       | [Version 1 updates](#version-1)  |
 
 The topics below explain the differences among the versions, Docker Engine
 compatibility, and [how to upgrade](#upgrading).
@@ -79,7 +79,7 @@ Several things differ depending on which version you use:
 
 These differences are explained below.
 
-### Version 1
+### Version 1 (Deprecated)
 
 Compose files that do not declare a version are considered "version 1". In those
 files, all the [services](compose-file-v3.md#service-configuration-reference) are
@@ -95,7 +95,7 @@ Version 1 files cannot declare named
 Compose does not take advantage of [networking](../networking.md) when you
 use version 1: every container is placed on the default `bridge` network and is
 reachable from every other container at its IP address. You need to use
-[links](compose-file-v1.md#links) to enable discovery between containers.
+`links` to enable discovery between containers.
 
 Example:
 
@@ -537,9 +537,7 @@ flag with the `config` command.
 > resulting configuration is only an approximate using non-Swarm mode
 > properties, it may produce unexpected results.
 
-
 ## Compose file format references
 - [Compose Specification](index.md)
 - [Compose file version 3](compose-file-v3.md)
-- [Compose file version 2](compose-file-v2.md)
-- [Compose file version 1](compose-file-v1.md)
+- [Compose file version 2](compose-file-v2.md)

compose/environment-variables.md

@@ -193,10 +193,3 @@ no Docker Compose entry for `environment` or `env_file`.
 Several environment variables are available for you to configure the Docker
 Compose command-line behavior. They begin with `COMPOSE_` or `DOCKER_`, and are
 documented in [CLI Environment Variables](reference/envvars.md).
-
-## Environment variables created by links
-
-When using the ['links' option](compose-file/compose-file-v3.md#links) in a
-[v1 Compose file](compose-file/compose-file-v1.md#link-environment-variables),
-environment variables are created for each link. These variables are deprecated.
-Use the link alias as a hostname instead.

compose/extends.md

@@ -174,8 +174,7 @@ $ docker-compose -f docker-compose.yml -f docker-compose.admin.yml \
 > **Note**
 >
 > The `extends` keyword is supported in earlier Compose file formats up to Compose
-> file version 2.1 (see [extends in v1](compose-file/compose-file-v1.md#extends)
-> and [extends in v2](compose-file/compose-file-v2.md#extends)), but is
+> file version 2.1 (see [extends in v2](compose-file/compose-file-v2.md#extends)), but is
 > not supported in Compose version 3.x. See the [Version 3 summary](compose-file/compose-versioning.md#version-3)
 > of keys added and removed, along with information on [how to upgrade](compose-file/compose-versioning.md#upgrading).
 > See [moby/moby#31101](https://github.com/moby/moby/issues/31101) to follow the

compose/networking.md

@@ -4,7 +4,7 @@ keywords: documentation, docs, docker, compose, orchestration, containers, netwo
 title: Networking in Compose
 ---
 
-> This page applies to Compose file formats [version 2](compose-file/compose-file-v2.md) and [higher](compose-file/index.md). Networking features are not supported for Compose file [version 1 (legacy)](compose-file/compose-file-v1.md).
+> This page applies to Compose file formats [version 2](compose-file/compose-file-v2.md) and [higher](compose-file/index.md). Networking features are not supported for Compose file version 1 (deprecated).
 
 By default Compose sets up a single
 [network](../engine/reference/commandline/network_create.md) for your app. Each