From 93135d4a6a8dca3e3b2834139a6fcbab49093b39 Mon Sep 17 00:00:00 2001
From: "Dustin C. Hatch" <dustin@hatch.name>
Date: Wed, 17 Jan 2024 21:18:24 -0600
Subject: [PATCH] ci: Build container image

In addition to building an RPM package for regular Fedora machines, we
now build a container image containing a statically-linked `sshca-cli`
executable.
---
 .containerignore              |  4 +++
 Containerfile                 | 18 +++++++++++
 ci/Jenkinsfile                | 57 +++++++++++++++++++++++++++++++++--
 ci/build-container.sh         |  3 ++
 ci/common.sh                  | 13 ++++++++
 ci/podTemplate-container.yaml | 19 ++++++++++++
 ci/publish-container.sh       |  7 +++++
 7 files changed, 119 insertions(+), 2 deletions(-)
 create mode 100644 .containerignore
 create mode 100644 Containerfile
 create mode 100644 ci/build-container.sh
 create mode 100644 ci/common.sh
 create mode 100644 ci/podTemplate-container.yaml
 create mode 100644 ci/publish-container.sh

diff --git a/.containerignore b/.containerignore
new file mode 100644
index 0000000..3ab56d6
--- /dev/null
+++ b/.containerignore
@@ -0,0 +1,4 @@
+*
+!src
+!Cargo.lock
+!Cargo.toml
diff --git a/Containerfile b/Containerfile
new file mode 100644
index 0000000..50f98f7
--- /dev/null
+++ b/Containerfile
@@ -0,0 +1,18 @@
+FROM docker.io/library/rust:1.73-alpine AS build
+
+COPY . /build
+
+WORKDIR /build
+
+RUN --mount=type=cache,target=/var/cache \
+	apk add --no-cache g++ \
+	&& :
+
+RUN cargo build --release --no-default-features --features rustls \
+	&& strip target/release/sshca-cli
+
+FROM scratch
+
+COPY --from=build /build/target/release/sshca-cli /
+
+ENTRYPOINT ["/sshca-cli"]
diff --git a/ci/Jenkinsfile b/ci/Jenkinsfile
index 9aa02b1..a2c9f72 100644
--- a/ci/Jenkinsfile
+++ b/ci/Jenkinsfile
@@ -2,7 +2,7 @@ pipeline {
     agent none
 
     stages {
-        stage('SSHCA CLI') {
+        stage('RPM') {
             matrix {
                 axes {
                     axis {
@@ -16,7 +16,7 @@ pipeline {
                 }
 
                 stages {
-                    stage('CLI') {
+                    stage('Build RPM') {
                         agent {
                             kubernetes {
                                 yamlFile 'ci/podTemplate.yaml'
@@ -79,6 +79,59 @@ pipeline {
                         }
                     }
                 }
+            }
+        }
+
+        stage('Container') {
+            matrix {
+                axes {
+                    axis {
+                        name 'ARCH'
+                        values 'amd64', 'arm64'
+                    }
+                }
+                stages {
+                    stage('Build Container') {
+                        agent {
+                            kubernetes {
+                                yamlFile 'ci/podTemplate-container.yaml'
+                                yamlMergeStrategy merge()
+                                defaultContainer 'buildah'
+                                nodeSelector "kubernetes.io/arch=${ARCH}"
+                            }
+                        }
+
+                        stages {
+                            stage('Build') {
+                                steps {
+                                    sh '. ci/build-container.sh'
+                                }
+                            }
+
+                            stage('Publish') {
+                                environment {
+                                    REGISTRY_AUTH_FILE = "${env.WORKSPACE_TMP}/auth.json"
+                                }
+                                steps {
+                                    withCredentials([usernamePassword(
+                                        credentialsId: 'jenkins-packages',
+                                        usernameVariable: 'BUILDAH_USERNAME',
+                                        passwordVariable: 'BUILDAH_PASSWORD',
+                                    )]) {
+                                        sh """
+                                            buildah login \
+                                            --username \${BUILDAH_USERNAME} \
+                                            --password \${BUILDAH_PASSWORD} \
+                                            git.pyrocufflink.net
+                                        """
+                                    }
+                                    sh '. ci/publish-container.sh'
+                                }
+                            }
+                        }
+                    }
+
+                }
 
             }
         }
diff --git a/ci/build-container.sh b/ci/build-container.sh
new file mode 100644
index 0000000..3d79218
--- /dev/null
+++ b/ci/build-container.sh
@@ -0,0 +1,3 @@
+. ci/common.sh
+
+buildah build -t "${IMAGE_NAME}:${TAG}" .
diff --git a/ci/common.sh b/ci/common.sh
new file mode 100644
index 0000000..060e8cb
--- /dev/null
+++ b/ci/common.sh
@@ -0,0 +1,13 @@
+escape_name() {
+    echo "$1" \
+        | tr A-Z a-z \
+        | sed -e 's/[^a-zA-Z0-9._-]/-/g' -e 's/^[.-]/_/'
+}
+
+REGISTRY_URL=git.pyrocufflink.net
+NAMESPACE=containerimages
+NAME="${JOB_NAME#*/}"
+NAME=$(escape_name "${NAME%/*}")
+TAG=$(escape_name "${BRANCH_NAME}")
+
+IMAGE_NAME="${REGISTRY_URL}/${NAMESPACE}/${NAME}"
diff --git a/ci/podTemplate-container.yaml b/ci/podTemplate-container.yaml
new file mode 100644
index 0000000..5da469f
--- /dev/null
+++ b/ci/podTemplate-container.yaml
@@ -0,0 +1,19 @@
+spec:
+  containers:
+  - name: buildah
+    image: quay.io/containers/buildah:v1
+    command:
+    - cat
+    stdin: true
+    tty: true
+    securityContext:
+      capabilities:
+        add:
+        - SYS_ADMIN
+        - MKNOD
+        - SYS_CHROOT
+        - SETFCAP
+    resources:
+      limits:
+        github.com/fuse: 1
+  hostUsers: false
diff --git a/ci/publish-container.sh b/ci/publish-container.sh
new file mode 100644
index 0000000..db774c9
--- /dev/null
+++ b/ci/publish-container.sh
@@ -0,0 +1,7 @@
+. ci/common.sh
+
+buildah push "${IMAGE_NAME}:${TAG}"
+buildah push "${IMAGE_NAME}:${TAG}" "${IMAGE_NAME}:${TAG}-${BUILD_NUMBER}"
+if [ ${BRANCH_NAME} = master ]; then
+    buildah push "${IMAGE_NAME}:${TAG}" "${IMAGE_NAME}:latest"
+fi