Refactor Couchbase 2.5 image and remove old couchbase directory

Removed the legacy couchbase/ directory and its scripts, consolidating the Docker build to couchbase-2.5. Updated the Dockerfile to download dependencies and the Couchbase package directly, simplifying the build process. Updated the workflow to remove manual .deb downloads and changed the image tag to 'latest'. Updated README to reflect these changes and clarify credits.

.github/workflows/publish-couchbase-2.5.yml

@@ -18,18 +18,6 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v3
 
-      - name: Download Couchbase 2.5.2 RPM
-        run: |
-          cd couchbase-2.5
-          wget https://launchpadlibrarian.net/90920725/libgpg-error0_1.10-2ubuntu1_amd64.deb
-          wget https://launchpadlibrarian.net/462496703/libgcrypt11_1.5.0-3ubuntu0.9_amd64.deb
-          wget https://launchpadlibrarian.net/98077365/libp11-kit0_0.12-2ubuntu1_amd64.deb
-          wget https://launchpadlibrarian.net/329563761/libtasn1-3_2.10-1ubuntu1.6_amd64.deb
-          wget https://launchpadlibrarian.net/311120336/libgnutls26_2.12.14-5ubuntu3.14_amd64.deb
-          wget https://launchpadlibrarian.net/320724516/librtmp0_2.4~20110711.gitc28f1bab-1ubuntu0.1_amd64.deb
-          wget https://launchpadlibrarian.net/178402337/libssl0.9.8_0.9.8o-7ubuntu3.2_amd64.deb
-          wget https://packages.couchbase.com/releases/2.5.2/couchbase-server-enterprise_2.5.2_x86_64.deb
-
       - name: Log in to GitHub Container Registry
         uses: docker/login-action@v2
         with:
@@ -43,7 +31,7 @@ jobs:
         with:
           images: ghcr.io/${{ github.repository }}/couchbase-2.5
           tags: |
-            type=raw,value=2.5
+            type=raw,value=latest
 
       - name: Build and push Docker image
         uses: docker/build-push-action@v4