WIP: add stunnel container image

https://jira.suse.com/browse/PED-11085

src/bci_build/package/__init__.py

@@ -1444,6 +1444,7 @@ def generate_disk_size_constraints(size_gb: int) -> str:
 from .appcontainers import PCP_CONTAINERS  # noqa: E402
 from .appcontainers import PROMETHEUS_CONTAINERS  # noqa: E402
 from .appcontainers import REGISTRY_CONTAINERS  # noqa: E402
+from .appcontainers import STUNNEL_CONTAINERS  # noqa: E402
 from .appcontainers import THREE_EIGHT_NINE_DS_CONTAINERS  # noqa: E402
 from .appcontainers import TRIVY_CONTAINERS  # noqa: E402
 from .base import BASE_CONTAINERS  # noqa: E402
@@ -1526,6 +1527,7 @@ def generate_disk_size_constraints(size_gb: int) -> str:
         *GCC_CONTAINERS,
         *SPACK_CONTAINERS,
         *KEA_DHCP_CONTAINERS,
+        *STUNNEL_CONTAINERS,
     )
 }
 

src/bci_build/package/appcontainers.py

@@ -20,6 +20,7 @@
 from bci_build.package.helpers import generate_package_version_check
 from bci_build.package.versions import format_version
 from bci_build.package.versions import get_pkg_version
+from bci_build.registry import publish_registry
 
 
 def _envsubst_pkg_name(os_version: OsVersion) -> str:
@@ -442,3 +443,36 @@ def _get_nginx_kwargs(os_version: OsVersion):
     )
     for os_version in (OsVersion.TUMBLEWEED,)
 ]
+
+STUNNEL_CONTAINERS = [
+    ApplicationStackContainer(
+        name="stunnel",
+        os_version=os_version,
+        tag_version=(tag_ver := "5"),
+        is_latest=os_version in CAN_BE_LATEST_OS_VERSION,
+        from_target_image=generate_from_image_tag(os_version, "bci-micro"),
+        version=(stunnel_version_re := "%%stunnel_re%%"),
+        pretty_name="Stunnel",
+        package_list=["stunnel"],
+        replacements_via_service=[
+            Replacement(stunnel_version_re, package_name="stunnel")
+        ],
+        extra_files={
+            "entrypoint.sh": (
+                Path(__file__).parent / "stunnel" / "entrypoint.sh"
+            ).read_bytes()
+        },
+        _publish_registry=publish_registry(os_version, app_collection=True),
+        build_stage_custom_end=generate_package_version_check(
+            "stunnel", tag_ver, ParseVersion.MAJOR, use_target=True
+        ),
+        custom_end=f"""COPY entrypoint.sh /usr/local/bin/
+{DOCKERFILE_RUN} chmod 0755 /usr/local/bin/entrypoint.sh; \
+        chown --recursive stunnel /etc/stunnel
+ENTRYPOINT ["/usr/local/bin/entrypoint.sh"]
+CMD ["/usr/sbin/stunnel"]
+USER stunnel
+""",
+    )
+    for os_version in ALL_NONBASE_OS_VERSIONS
+]

src/bci_build/package/stunnel/README.md.j2

@@ -0,0 +1,15 @@
+# {{ image.pretty_name }} Container Image
+
+{% include 'badges.j2' %}
+
+
+## Description
+
+Stunnel is an open-source multi-platform application used to provide a universal
+TLS/SSL tunneling service.
+
+
+## How to use this Image
+
+
+{% include 'licensing_and_eula.j2' %}

src/bci_build/package/stunnel/entrypoint.sh

@@ -0,0 +1,18 @@
+#!/bin/bash
+
+STUNNEL_CERT="${STUNNEL_CERT:-/etc/stunnel/stunnel.pem}"
+STUNNEL_KEY="${STUNNEL_KEY:-/etc/stunnel/stunnel.key}"
+
+conf="/etc/stunnel/conf.d/container-ssl.conf"
+echo "cert = ${STUNNEL_CERT}" > $conf
+echo "key = ${STUNNEL_KEY}" >> $conf
+
+
+if [[ -z "${STUNNEL_SERVICE_NAME}" ]] && [[ -z "${STUNNEL_ACCEPT}" ]] && [[ -z "${STUNNEL_CONNECT}" ]]; then
+    conf="/etc/stunnel/conf.d/container.conf"
+    echo "[${STUNNEL_SERVICE_NAME}]" > $conf
+    echo "accept = ${STUNNEL_ACCEPT}" >> $conf
+    echo "connect = ${STUNNEL_CONNECT}" >> $conf
+fi
+
+exec "$@"