Task A-2: Storing latest tag in .env file + Read raw .env file

Refer to details in cleanup issue:
Task A-2: e-mission/e-mission-docs#1082 (comment)

Added .env file initialized with the current latest tag of admin-dash and server image.
Internal script can read docker image tags directly from .env.tags using curl to fetch raw file contents.
Storing server tag as well since admin-dash Dockerfile uses it.

Removed workflow dispatch inputs
No longer need inputs since reading from .env.tags in server repo directly

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Read raw file contents directly instead of using REST API
REST API endpoint returns base64 encoded data which then needs to be decoded.
Can simply read the Raw file contents from the publicly available file.

------

Also changed tag name to match tag name in internal repository
This way we can directly use the tag name without having extra fields like envVar in the internal script.

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For now not removing artifacts until the internal script is updated to handle this change.

.env

@@ -1 +1,3 @@
+PUBLIC_DASH_NOTEBOOK_IMAGE_TAG=2024-09-21--39-25
+PUBLIC_DASH_FRONTEND_IMAGE_TAG=2024-09-21--39-25
 SERVER_IMAGE_TAG=2024-09-20--06-45

.github/workflows/image_build_push.yml

@@ -5,10 +5,6 @@ on:
     branches: [ main ]
 
   workflow_dispatch:
-    inputs:
-      docker_image_tag:
-        description: "Latest Docker image tags passed from e-mission-server repository on image build and push"
-        required: true
 
 env:
   DOCKER_USER: ${{secrets.DOCKER_USER}}
@@ -24,25 +20,26 @@ jobs:
     steps:
     - uses: actions/checkout@v4
 
+    - name: Fetch server image tag
+      id: get-server-tag
+      run: |
+        response=$(curl -s https://raw.githubusercontent.com/MukuFlash03/e-mission-server/refs/heads/cleanup-cicd/.env)
+        SERVER_IMAGE_TAG=$(echo "$response" | grep "SERVER_IMAGE_TAG=" | cut -d'=' -f2)
+        echo "SERVER_IMAGE_TAG=$SERVER_IMAGE_TAG" >> "$GITHUB_OUTPUT"
+
     - name: Set docker image tags
       id: set-tags
       run: |
         set -a; source .env; set +a
-        echo "DOCKER_TAG_FROM_PUSH=${SERVER_IMAGE_TAG}" >> "$GITHUB_OUTPUT"
-        echo "DOCKER_TAG_FROM_WORKFLOW_DISPATCH=${{ github.event.inputs.docker_image_tag }}" >> "$GITHUB_OUTPUT"
-
-    - name: Set docker image tag from .env.repoTags file
-      id: set-frontend-tag
-      run: |
-        set -a; source .env.repoTags; set +a
-        echo "FRONTEND_IMAGE_TAG=${FRONTEND_IMAGE_TAG}" >> "$GITHUB_OUTPUT"
+        echo "PUBLIC_DASH_NOTEBOOK_IMAGE_TAG=${PUBLIC_DASH_NOTEBOOK_IMAGE_TAG}" >> "$GITHUB_OUTPUT"
+        echo "PUBLIC_DASH_FRONTEND_IMAGE_TAG=${PUBLIC_DASH_FRONTEND_IMAGE_TAG}" >> "$GITHUB_OUTPUT"
 
-    - name: Print input docker image tag
+    - name: Print input docker image tags
       run: |
         echo "Event name: ${{ github.event_name }}"
-        echo "Latest docker image tag (push): ${{ steps.set-tags.outputs.DOCKER_TAG_FROM_PUSH }}"
-        echo "Latest docker image tag (workflow_dispatch): ${{ steps.set-tags.outputs.DOCKER_TAG_FROM_WORKFLOW_DISPATCH }}"
-        echo "Current frontend image tag (push): ${{ steps.set-frontend-tag.outputs.FRONTEND_IMAGE_TAG }}"
+        echo "Current notebook image tag (push): ${{ steps.set-tags.outputs.PUBLIC_DASH_NOTEBOOK_IMAGE_TAG }}"
+        echo "Current frontend image tag (push): ${{ steps.set-tags.outputs.PUBLIC_DASH_FRONTEND_IMAGE_TAG }}"
+        echo "Latest server image tag (${{ github.event_name }}): ${{ steps.get-server-tag.outputs.SERVER_IMAGE_TAG }}"
 
     - name: docker login
       run: | # log into docker hub account
@@ -57,21 +54,15 @@ jobs:
 
     - name: build docker image
       run: |
-        if [ "${{ github.event_name }}" == "workflow_dispatch" ]; then
-          SERVER_IMAGE_TAG=${{ steps.set-tags.outputs.DOCKER_TAG_FROM_WORKFLOW_DISPATCH }} docker compose -f docker-compose.yml build
-        else
-          SERVER_IMAGE_TAG=${{ steps.set-tags.outputs.DOCKER_TAG_FROM_PUSH }} docker compose -f docker-compose.yml build
-        fi
+        SERVER_IMAGE_TAG=${{ steps.get-server-tag.outputs.SERVER_IMAGE_TAG }} docker compose -f docker-compose.yml build
         docker images
 
     - name: rename docker images
       run: |
         if [ "${{ github.event_name }}" == "push" ]; then
           docker image tag em-pub-dash-prod/frontend:latest $DOCKER_USER/${GITHUB_REPOSITORY#*/}_frontend:${GITHUB_REF##*/}_${{ steps.date.outputs.date }}
-          echo "FRONTEND_IMAGE_TAG=${{ steps.date.outputs.date }}" >> $GITHUB_ENV
         fi
         docker image tag em-pub-dash-prod/viz-scripts:latest $DOCKER_USER/${GITHUB_REPOSITORY#*/}_notebook:${GITHUB_REF##*/}_${{ steps.date.outputs.date }}
-        echo "NOTEBOOK_IMAGE_TAG=${{ steps.date.outputs.date }}" >> $GITHUB_ENV
 
     - name: push docker images
       run: |
@@ -82,32 +73,34 @@ jobs:
 
     - name: Update .env file 
       run: |
+        echo "PUBLIC_DASH_NOTEBOOK_IMAGE_TAG=${{ steps.date.outputs.date }}" > .env
         if [ "${{ github.event_name }}" == "workflow_dispatch" ]; then
-          echo "Workflow_dispatch: New server image built and pushed, Updating image tag in .env"
-          echo "SERVER_IMAGE_TAG=${{ steps.set-tags.outputs.DOCKER_TAG_FROM_WORKFLOW_DISPATCH }}" > .env
+          echo "Workflow_dispatch: Reuse existing frontend image tag"
+          echo "PUBLIC_DASH_FRONTEND_IMAGE_TAG=${{ steps.set-tags.outputs.PUBLIC_DASH_FRONTEND_IMAGE_TAG }}" >> .env
         else
-          echo "Push event: New frontend image built and pushed, Updating image tag in .env.repoTags"
-          echo "FRONTEND_IMAGE_TAG=${{ steps.date.outputs.date }}" > .env.repoTags
+          echo "Push event: Update frontend image tag"
+          echo "PUBLIC_DASH_FRONTEND_IMAGE_TAG=${{ steps.date.outputs.date }}" >> .env
         fi
+        echo "SERVER_IMAGE_TAG=${{ steps.get-server-tag.outputs.SERVER_IMAGE_TAG }}" >> .env
   
     - name: Add, Commit, Push changes to .env file
       run: |
         git config --local user.email "[email protected]"
         git config --local user.name "Github Actions bot to update .env with latest tags"
         if git diff --quiet; then
-          echo "Latest timestamps already present in .env files, no changes to commit"
+          echo "Latest timestamp already present in .env file, no changes to commit"
         else
-          git add .env .env.repoTags
-          git commit -m "Updated docker image tags in .env files to the latest timestamps"
+          git add .env
+          git commit -m "Updated docker image tags in .env file to the latest timestamp"
           git push origin 
         fi
    
-    - name: Create tag files
+    - name: Create artifact text files
       run: |
         if [ "${{ github.event_name }}" == "push" ]; then
           echo ${{ steps.date.outputs.date }} > frontend_tag_file.txt
         else
-          echo ${{ steps.set-frontend-tag.outputs.FRONTEND_IMAGE_TAG }} > frontend_tag_file.txt
+          echo ${{ steps.set-tags.outputs.PUBLIC_DASH_FRONTEND_IMAGE_TAG }} > frontend_tag_file.txt
         fi
         echo ${{ steps.date.outputs.date }} > notebook_tag_file.txt
         echo "Created tag text files"