feat: build and push container image for ghcr.io, update docker.md, and other related fixes (#2805)

* chore: update cuda version in container

* fix: use symlink to fix error libcuda.so: cannot open shared object file:

* fix: update docker entrypoint to use entry_with_update.py

* feat: add container build & push workflow

* fix: container action run conditions

* fix: container action versions

* fix: container action versions v2

* fix: docker action registry login and metadata

* docs: adjust docker documentation based on latest changes, add docs for podman and docker

* chore: replace image name env var with github.event.repository.name

Co-authored-by: Manuel Schmid <9307310+mashb1t@users.noreply.github.com>

* chore: replace image name env var with github.event.repository.name (pt2)

Co-authored-by: Manuel Schmid <9307310+mashb1t@users.noreply.github.com>

* fix: switch to semver versioning

Co-authored-by: Manuel Schmid <9307310+mashb1t@users.noreply.github.com>

* fix: build only on versioned tags

Co-authored-by: Manuel Schmid <9307310+mashb1t@users.noreply.github.com>

* fix: don't update in entrypoint

Co-authored-by: Manuel Schmid <9307310+mashb1t@users.noreply.github.com>

* fix: remove dash in "docker-compose"

Co-authored-by: Manuel Schmid <9307310+mashb1t@users.noreply.github.com>

* feat: sync pytorch for docker with version used in prepare_environment

* feat: update cuda to 12.4.1

* fix: correctly clone checked out version in builds, not always main

* refactor: remove irrelevant version in docker-compose.yml

---------

Co-authored-by: Manuel Schmid <9307310+mashb1t@users.noreply.github.com>
Co-authored-by: Manuel Schmid <dev@mash1t.de>

.github/dependabot.yml

@@ -0,0 +1,6 @@
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "monthly"

.github/workflows/build_container.yml

@@ -0,0 +1,44 @@
+name: Create and publish a container image
+
+on:
+  push:
+    tags:
+      - 'v*'
+
+jobs:
+  build-and-push-image:
+    runs-on: ubuntu-latest
+
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Log in to the Container registry
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ghcr.io/${{ github.repository_owner }}/${{ github.event.repository.name }}
+          tags: |
+            type=semver,pattern={{version}}
+            type=semver,pattern={{major}}.{{minor}}
+            type=semver,pattern={{major}}
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          file: ./Dockerfile
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}