Use an explicit server image tag when provided (#484)

## What was changed

When running against a provided docker image we now use the _explicit_ image tag I've embedded in our artifacts rather than `latest`.

## Why?

While adding feature tests to our [builds repo](temporalio/docker-builds#200) I discovered that running `latest` doesn't always run the actual image we've loaded. It seems to be running the latest version we've pushed to dockerhub rather than the locally tagged `latest` version.

If this is true (it's what my testing indicates), then we aren't testing the image we think we are in the server's CI. This will fix that, however

.github/workflows/dotnet.yaml

@@ -46,6 +46,17 @@ jobs:
         run: docker load --input /tmp/server-docker/temporal-autosetup.tar
         working-directory: '.'
 
+      - name: Override IMAGE_TAG environment variable
+        if: ${{ inputs.docker-image-artifact-name }}
+        run: |
+          image_tag=latest
+          # image_tag won't exist on older builds (like 1.22.0), so default to latest
+          if [ -f /tmp/server-docker/image_tag ]; then
+            image_tag=$(cat /tmp/server-docker/image_tag)
+          fi
+          echo "IMAGE_TAG=${image_tag}" >> $GITHUB_ENV
+        working-directory: '.'
+
       - name: Checkout SDK features repo
         uses: actions/checkout@v3
         with:

.github/workflows/go.yaml

@@ -46,6 +46,17 @@ jobs:
         run: docker load --input /tmp/server-docker/temporal-autosetup.tar
         working-directory: '.'
 
+      - name: Override IMAGE_TAG environment variable
+        if: ${{ inputs.docker-image-artifact-name }}
+        run: |
+          image_tag=latest
+          # image_tag won't exist on older builds (like 1.22.0), so default to latest
+          if [ -f /tmp/server-docker/image_tag ]; then
+            image_tag=$(cat /tmp/server-docker/image_tag)
+          fi
+          echo "IMAGE_TAG=${image_tag}" >> $GITHUB_ENV
+        working-directory: '.'
+
       - name: Checkout SDK features repo
         uses: actions/checkout@v3
         with:

.github/workflows/java.yaml

@@ -47,6 +47,17 @@ jobs:
         run: docker load --input /tmp/server-docker/temporal-autosetup.tar
         working-directory: '.'
 
+      - name: Override IMAGE_TAG environment variable
+        if: ${{ inputs.docker-image-artifact-name }}
+        run: |
+          image_tag=latest
+          # image_tag won't exist on older builds (like 1.22.0), so default to latest
+          if [ -f /tmp/server-docker/image_tag ]; then
+            image_tag=$(cat /tmp/server-docker/image_tag)
+          fi
+          echo "IMAGE_TAG=${image_tag}" >> $GITHUB_ENV
+        working-directory: '.'
+
       - name: Checkout SDK features repo
         uses: actions/checkout@v3
         with:

.github/workflows/python.yaml

@@ -46,6 +46,17 @@ jobs:
         run: docker load --input /tmp/server-docker/temporal-autosetup.tar
         working-directory: '.'
 
+      - name: Override IMAGE_TAG environment variable
+        if: ${{ inputs.docker-image-artifact-name }}
+        run: |
+          image_tag=latest
+          # image_tag won't exist on older builds (like 1.22.0), so default to latest
+          if [ -f /tmp/server-docker/image_tag ]; then
+            image_tag=$(cat /tmp/server-docker/image_tag)
+          fi
+          echo "IMAGE_TAG=${image_tag}" >> $GITHUB_ENV
+        working-directory: '.'
+
       - name: Checkout SDK features repo
         uses: actions/checkout@v3
         with:

.github/workflows/typescript.yaml

@@ -46,6 +46,17 @@ jobs:
         run: docker load --input /tmp/server-docker/temporal-autosetup.tar
         working-directory: '.'
 
+      - name: Override IMAGE_TAG environment variable
+        if: ${{ inputs.docker-image-artifact-name }}
+        run: |
+          image_tag=latest
+          # image_tag won't exist on older builds (like 1.22.0), so default to latest
+          if [ -f /tmp/server-docker/image_tag ]; then
+            image_tag=$(cat /tmp/server-docker/image_tag)
+          fi
+          echo "IMAGE_TAG=${image_tag}" >> $GITHUB_ENV
+        working-directory: '.'
+
       - name: Checkout SDK features repo
         uses: actions/checkout@v3
         with:

dockerfiles/docker-compose.for-server-image.yaml

@@ -4,7 +4,7 @@ version: '3.5'
 
 services:
   temporal-server:
-    image: temporaliotest/auto-setup:latest
+    image: temporaliotest/auto-setup:${IMAGE_TAG:-latest}
     environment:
       - CASSANDRA_SEEDS=cassandra
       - ENABLE_ES=true