docs: embedd asciinema casts (#1154)

Signed-off-by: Fabian Kammel <fk@edgeless.systems>
Co-authored-by: Moritz Eckert <m1gh7ym0@gmail.com>
Co-authored-by: Thomas Tendyck <tt@edgeless.systems>
Co-authored-by: 3u13r <lc@edgeless.systems>

docs/screencasts/generate-screencasts.sh

@@ -0,0 +1,51 @@
+#!/usr/bin/env bash
+#
+# This script prepares the environment for expect scripts to be recorded in,
+# executes all scripts, and copies the .cast files to our doc's asset folder.
+#
+# Note: A cluster is created in GCP. Therefore you are expected to be logged in
+# via `gcloud` CLI. You credentials at $HOME/.config/gcloud are mounted into the
+# screenrecordings container. A full script run takes ~20min.
+#
+
+docker build -t screenrecodings docker
+
+# Verify CLI
+docker run -it -v "$(pwd)"/recordings:/recordings screenrecodings /scripts/verify-cli.expect
+cp recordings/verify-cli.cast ../static/assets/verify-cli.cast
+
+# Check SBOM
+docker run -it -v "$(pwd)"/recordings:/recordings screenrecodings /scripts/check-sbom.expect
+cp recordings/check-sbom.cast ../static/assets/check-sbom.cast
+
+#
+# Do not change the order of the following sections. A cluster is created,
+# modified and finally destroyed. Otherwise resources might not get cleaned up.
+#
+# To get multiple recordings a dedicated script is used for each step.
+# The Constellation working directory is shared via /constellation container folder.
+#
+
+# Create config
+docker run -it \
+  -v "${HOME}"/.config/gcloud:/root/.config/gcloud \
+  -v "$(pwd)"/recordings:/recordings \
+  -v "$(pwd)"/constellation:/constellation \
+  screenrecodings /scripts/configure-cluster.expect
+cp recordings/configure-cluster.cast ../static/assets/configure-cluster.cast
+
+# Create cluster
+docker run -it \
+  -v "${HOME}"/.config/gcloud:/root/.config/gcloud \
+  -v "$(pwd)"/recordings:/recordings \
+  -v "$(pwd)"/constellation:/constellation \
+  screenrecodings /scripts/create-cluster.expect
+cp recordings/create-cluster.cast ../static/assets/create-cluster.cast
+
+# Terminate cluster
+docker run -it \
+  -v "${HOME}"/.config/gcloud:/root/.config/gcloud \
+  -v "$(pwd)"/recordings:/recordings \
+  -v "$(pwd)"/constellation:/constellation \
+  screenrecodings /scripts/terminate-cluster.expect
+cp recordings/terminate-cluster.cast ../static/assets/terminate-cluster.cast