Updating some of the references to v1.3.0

Adding an entry in the changelog to reference image name changes

Signed-off-by: Edward Welch <edward.welch@grafana.com>

CHANGELOG.md

@@ -10,6 +10,8 @@ Before we get into new features, version 1.4.0 brings with it the first (that we
 
 We have created a dedicated page for upgrading Loki in the [operations section of the docs](https://github.com/grafana/loki/tree/v1.4.0/docs/operations/upgrade.md)
 
+The docker image tag naming was changed, the starting in 1.4.0 docker images no longer have the `v` prefix: `grafana/loki:1.4.0`
+
 Also you should be aware we are now pruning old `master-xxxxx` docker images from docker hub, currently anything older than 90 days is removed.  **We will never remove released versions of Loki**
 
 ### Notable Features

docs/clients/promtail/installation.md

@@ -12,7 +12,7 @@ Every release includes binaries for Promtail which can be found on the
 
 ```bash
 # modify tag to most recent version
-$ docker pull grafana/promtail:v1.3.0
+$ docker pull grafana/promtail:1.4.0
 ```
 
 ## Helm

docs/installation/docker.md

@@ -11,15 +11,15 @@ For production, we recommend Tanka or Helm.
 ## Install with Docker
 
 ```bash
-$ wget https://raw.githubusercontent.com/grafana/loki/v1.3.0/cmd/loki/loki-local-config.yaml -O loki-config.yaml
-$ docker run -v $(pwd):/mnt/config -p 3100:3100 grafana/loki:v1.3.0 -config.file=/mnt/config/loki-config.yaml
-$ wget https://raw.githubusercontent.com/grafana/loki/v1.3.0/cmd/promtail/promtail-docker-config.yaml -O promtail-config.yaml
-$ docker run -v $(pwd):/mnt/config -v /var/log:/var/log grafana/promtail:latest -config.file=/mnt/config/promtail-config.yaml
+$ wget https://raw.githubusercontent.com/grafana/loki/v1.4.0/cmd/loki/loki-local-config.yaml -O loki-config.yaml
+$ docker run -v $(pwd):/mnt/config -p 3100:3100 grafana/loki:1.4.0 -config.file=/mnt/config/loki-config.yaml
+$ wget https://raw.githubusercontent.com/grafana/loki/v1.4.0/cmd/promtail/promtail-docker-config.yaml -O promtail-config.yaml
+$ docker run -v $(pwd):/mnt/config -v /var/log:/var/log grafana/promtail:1.4.0 -config.file=/mnt/config/promtail-config.yaml
 ```
 
 ## Install with Docker Compose
 
 ```bash
-$ wget https://raw.githubusercontent.com/grafana/loki/v1.3.0/production/docker-compose.yaml -O docker-compose.yaml
+$ wget https://raw.githubusercontent.com/grafana/loki/v1.4.0/production/docker-compose.yaml -O docker-compose.yaml
 $ docker-compose -f docker-compose.yaml up
 ```

docs/operations/loki-canary.md

@@ -60,7 +60,7 @@ Loki Canary is also provided as a Docker container image:
 
 ```bash
 # change tag to the most recent release
-$ docker pull grafana/loki-canary:v1.3.0
+$ docker pull grafana/loki-canary:1.4.0
 ```
 
 ### Kubernetes