Add CI task for Alpine Linux

.cirrus.yml

@@ -182,6 +182,15 @@ ubuntu16_task:
     << : *RESOURCES_TEMPLATE
   << : *CI_TEMPLATE
 
+alpine_task:
+  container:
+    # Alpine releases typically happen every 6 months w/ support for 2 years.
+    # The Dockerfile simply tracks latest Alpine release and shouldn't
+    # generally need updating based on particular Alpine release timelines.
+    dockerfile: ci/alpine/Dockerfile
+    << : *RESOURCES_TEMPLATE
+  << : *CI_TEMPLATE
+
 # Apple doesn't publish official long-term support timelines.
 # We aim to support both the current and previous macOS release.
 macos_big_sur_task:

ci/alpine/Dockerfile

@@ -0,0 +1,23 @@
+FROM alpine:latest
+
+RUN apk add --no-cache \
+  cmake \
+  make \
+  g++ \
+  python3 \
+  python3-dev \
+  flex \
+  bison \
+  libpcap-dev \
+  openssl-dev \
+  zlib-dev \
+  swig \
+  bash \
+  bsd-compat-headers \
+  linux-headers \
+  fts-dev \
+  git \
+  curl \
+  py3-pip
+
+RUN pip3 install junit2html