Stabilize the docker smoke testing scripts and HTML 3.2 webview

tests/test_docker_integration.sh

@@ -0,0 +1,76 @@
+#!/bin/sh
+
+set -eu
+
+image=${TUX_DOCK_TEST_IMAGE:-debian:forky}
+name="tux-dock-test-$$-$(date +%s)"
+cleanup_status=0
+
+run_raw() {
+    command_name=$1
+    shift
+    started=$(date +%s)
+    printf '%s\n' "[TEST OUTPUT BEGIN] $command_name"
+    set +e
+    "$@" 2>&1
+    command_status=$?
+    set -e
+    elapsed=$(( $(date +%s) - started ))
+    printf '%s\n' "[TEST OUTPUT END] $command_name"
+    printf '%s\n' "[TEST RESULT] command=$command_name status=$command_status elapsed=${elapsed}s"
+    return "$command_status"
+}
+
+cleanup() {
+    if docker container inspect "$name" >/dev/null 2>&1; then
+        printf '%s\n' "[TUI] Cleanup: Remove Container"
+        printf '%s\n' "[TUI] Busy |"
+        if ! docker rm -f "$name"; then
+            cleanup_status=1
+        fi
+        printf '%s\n' "[TUI] Complete: Container removed"
+    fi
+}
+trap cleanup EXIT INT TERM
+
+printf '%s\n' "[TUI] Actions > Run/Create Interactive Container"
+printf '%s\n' "[TUI] Busy |"
+printf '%s\n' "[TUI] docker run --name $name $image sh -c '<tests>'"
+
+if ! docker image inspect "$image" >/dev/null 2>&1; then
+    printf '%s\n' "[TUI] Pull Docker Image: $image"
+    run_raw "docker pull $image" docker pull "$image"
+else
+    printf '%s\n' "[TUI] Image available: $image"
+fi
+
+run_in_container() {
+    command_name=$1
+    shift
+    printf '%s\n' "[TUI] Run command: $command_name"
+    printf '%s\n' "[TUI] Busy |"
+    run_raw "$command_name" docker exec "$name" "$@"
+    printf '%s\n' "[TUI] Complete: $command_name succeeded"
+}
+
+run_raw "docker run -d --name $name $image sleep 300" docker run -d --name "$name" "$image" sleep 300
+printf '%s\n' "[TUI] Complete: Container created"
+run_in_container "ls /" ls /
+run_in_container "cat /etc/os-release" cat /etc/os-release
+run_in_container "apt-get update" apt-get update
+run_in_container "bash --version" bash --version
+
+printf '%s\n' "[TUI] Remove Container: $name"
+run_raw "docker rm -f $name" docker rm -f "$name"
+printf '%s\n' "[TUI] Complete: Container removed"
+
+printf '%s\n' "[TUI] Verify removal: docker container inspect $name"
+if run_raw "docker container inspect $name" docker container inspect "$name"; then
+    printf '%s\n' "Container still exists after removal" >&2
+    exit 1
+else
+    printf '%s\n' "[TUI] Complete: Removal verified"
+fi
+
+trap - EXIT INT TERM
+exit "$cleanup_status"