Add manually triggerable Action to build simd Docker image (cosmos#2001)

.github/workflows/build-simd-image-from-tag.yml

@@ -0,0 +1,35 @@
+name: Build Simd Image
+on:
+  workflow_dispatch:
+    inputs:
+      tag:
+        description: 'The tag of the image to build'
+        required: true
+        type: string
+
+env:
+   REGISTRY: ghcr.io
+   ORG: cosmos
+   IMAGE_NAME: ibc-go-simd
+   VERSION: "${{ inputs.tag }}"
+
+jobs:
+   build-image-at-tag:
+      runs-on: ubuntu-latest
+      steps:
+         - uses: actions/checkout@v3
+           with:
+            ref: "${{ env.VERSION }}"
+            fetch-depth: 0
+         - name: Log in to the Container registry
+           uses: docker/login-action@49ed152c8eca782a232dede0303416e8f356c37b
+           with:
+              registry: ${{ env.REGISTRY }}
+              username: ${{ github.actor }}
+              password: ${{ secrets.GITHUB_TOKEN }}
+         - name: Fetch latest Dockerfile
+           run: curl https://raw.githubusercontent.com/cosmos/ibc-go/main/Dockerfile -o Dockerfile
+         - name: Build image
+           run: |
+            docker build . -t "${REGISTRY}/${ORG}/${IMAGE_NAME}:${VERSION}"
+            docker push "${REGISTRY}/${ORG}/${IMAGE_NAME}:${VERSION}"

e2e/README.md

@@ -15,7 +15,8 @@
 2. [Test design](#test-design)
    - a. [ibctest](#ibctest)
    - b. [CI configuration](#ci-configuration)
-3. [Troubleshooting](#troubleshooting)
+3. [Github Workflows](#github-workflows) 
+4. [Troubleshooting](#troubleshooting)
 
 
 ## How to write tests
@@ -308,6 +309,25 @@ All tests will be run on different hosts.
 * Gas fees are set to zero to simply calcuations when asserting account balances.
 * When upgrading from e.g. v4 -> v5, in ibc-go, we cannot upgrade the go.mod under `e2e` since v5 will not yet exist. We need to upgrade it in a follow up PR.
 
+
+### GitHub Workflows
+
+#### Building and pushing a `simd` image.
+
+If we ever need to manually build and push an image, we can do so with the [Build Simd Image](../.github/workflows/build-simd-image-from-tag.yml) GitHub workflow.
+
+This can be triggered manually from the UI by navigating to
+
+`Actions` -> `Build Simd Image` -> `Run Workflow`
+
+And providing the git tag.
+
+Alternatively, the [gh](https://cli.github.com/) CLI tool can be used to trigger this workflow.
+
+```bash
+gh workflow run "Build Simd Image" -f tag=v3.0.0
+```
+
 ### Troubleshooting
 
 * On Mac, after running a lot of tests, it can happen that containers start failing. To fix this, you can try clearing existing containers and restarting the docker daemon.