build+ci: add Dockerfile and workflow

Refs: #5303
Change-Id: I5706b946598468b430216a3bf2ec9e8601de3c96
diff --git a/.dockerignore b/.dockerignore
new file mode 100644
index 0000000..3c7f02d
--- /dev/null
+++ b/.dockerignore
@@ -0,0 +1,27 @@
+# Waf build system
+build/
+.waf-*-*/
+.waf3-*-*/
+.lock-waf*
+
+# Compiled python code
+**/__pycache__/
+**/*.py[cod]
+
+# Qt Creator
+*.creator
+*.creator.user
+.qtc_clangd/
+
+# Visual Studio Code
+.vscode/
+
+# macOS
+**/.DS_Store
+**/.AppleDouble
+**/.LSOverride
+**/._*
+
+# Other
+Dockerfile
+VERSION.info
diff --git a/.github/workflows/docker.yml b/.github/workflows/docker.yml
new file mode 100644
index 0000000..6f7b9ab
--- /dev/null
+++ b/.github/workflows/docker.yml
@@ -0,0 +1,19 @@
+name: Docker
+on:
+  push:
+    tags:
+      - 'v?[0-9]+.[0-9]+*'
+  schedule:
+    # twice a month
+    - cron: '20 11 5,20 * *'
+  workflow_dispatch:
+
+permissions:
+  packages: write
+  id-token: write
+
+jobs:
+  ndncert:
+    uses: named-data/actions/.github/workflows/docker-image.yml@v1
+    with:
+      name: ndncert
diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..8a83c9b
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,40 @@
+# syntax=docker/dockerfile:1
+
+ARG NDN_CXX_VERSION=latest
+FROM ghcr.io/named-data/ndn-cxx-build:${NDN_CXX_VERSION} AS build
+
+ARG JOBS
+ARG SOURCE_DATE_EPOCH
+RUN --mount=rw,target=/src <<EOF
+    set -eux
+    cd /src
+    ./waf configure \
+        --prefix=/usr \
+        --libdir=/usr/lib \
+        --sysconfdir=/etc \
+        --localstatedir=/var \
+        --sharedstatedir=/var
+    ./waf build
+    ./waf install
+EOF
+
+
+FROM ghcr.io/named-data/ndn-cxx-runtime:${NDN_CXX_VERSION} AS ndncert
+
+COPY --link --from=build /usr/lib/libndn-cert.so.* /usr/lib/
+COPY --link --from=build /usr/bin/ndncert-ca-server /usr/bin/
+COPY --link --from=build /usr/bin/ndncert-ca-status /usr/bin/
+COPY --link --from=build /usr/bin/ndncert-send-email-challenge /usr/bin/
+COPY --link --from=build /usr/bin/ndncert-client /usr/bin/
+
+RUN apt-get install -Uy --no-install-recommends \
+        python3 \
+    && apt-get distclean
+
+ENV HOME=/config
+VOLUME /config
+VOLUME /etc/ndncert
+VOLUME /run/nfd
+
+ENTRYPOINT ["/usr/bin/ndncert-ca-server"]
+CMD ["-c", "/config/ca.conf"]