docs: update container version references to v1.5.0

Update all pinned version examples from v1.3.2 to v1.5.0 across
container docs, GitHub template, and GitLab template pages.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: matthew-on-git

content/docs/container/_index.md

@@ -16,7 +16,7 @@ The dev-toolchain image is hosted on GitHub Container Registry (GHCR):
 docker pull ghcr.io/devrail-dev/dev-toolchain:v1
 
 # Pull a specific version (for reproducible builds)
-docker pull ghcr.io/devrail-dev/dev-toolchain:v1.3.2
+docker pull ghcr.io/devrail-dev/dev-toolchain:v1.5.0
 ```
 
 ## How It Works with the Makefile
@@ -101,25 +101,25 @@ For projects requiring reproducible builds, pin to an exact semver tag:
 
 ```makefile
 # Pin to an exact version for reproducibility
-DEVRAIL_IMAGE ?= ghcr.io/devrail-dev/dev-toolchain:v1.3.2
+DEVRAIL_IMAGE ?= ghcr.io/devrail-dev/dev-toolchain:v1.5.0
 ```
 
 ### Tagging Strategy
 
 | Tag | Example | Behavior |
 |---|---|---|
 | Major floating | `v1` | Updated on every release; non-breaking updates propagate automatically |
-| Exact semver | `v1.3.2` | Immutable; never updated after publication |
+| Exact semver | `v1.5.0` | Immutable; never updated after publication |
 
-Weekly builds publish both an exact semver tag (e.g., `v1.3.2`) and update the floating major tag (`v1`). Breaking changes bump the major version.
+Weekly builds publish both an exact semver tag (e.g., `v1.5.0`) and update the floating major tag (`v1`). Breaking changes bump the major version.
 
 ### Upgrading
 
 To upgrade to a new exact version:
 
 ```makefile
 # Update the version in your Makefile
-DEVRAIL_IMAGE ?= ghcr.io/devrail-dev/dev-toolchain:v1.4.0
+DEVRAIL_IMAGE ?= ghcr.io/devrail-dev/dev-toolchain:v1.5.0
 ```
 
 If you use the floating `v1` tag, upgrades happen automatically when the container image is re-pulled.

content/docs/templates/github.md

@@ -128,7 +128,7 @@ To pin a specific container version:
 
 ```makefile
 # In your Makefile, override the default image
-DEVRAIL_IMAGE ?= ghcr.io/devrail-dev/dev-toolchain:v1.3.2
+DEVRAIL_IMAGE ?= ghcr.io/devrail-dev/dev-toolchain:v1.5.0
 ```
 
 ### Adjusting CI Triggers

content/docs/templates/gitlab.md

@@ -164,7 +164,7 @@ Override the container image in `.gitlab-ci.yml`:
 
 ```yaml
 # Pin to a specific version
-image: ghcr.io/devrail-dev/dev-toolchain:v1.3.2
+image: ghcr.io/devrail-dev/dev-toolchain:v1.5.0
 ```
 
 Also update the `DEVRAIL_IMAGE` variable in your `Makefile` for local development consistency.