diff --git a/build.bash b/build.bash
new file mode 100755
index 0000000..df22141
--- /dev/null
+++ b/build.bash
@@ -0,0 +1,34 @@
+#!/bin/bash
+set -exo pipefail
+
+I2SRC="$1"
+
+if [ -z "$I2SRC" ]; then
+	cat <<EOF >&2
+Usage: ${0} /icinga2/source/dir
+EOF
+
+	false
+fi
+
+I2SRC="$(realpath "$I2SRC")"
+BLDCTX="$(realpath "$(dirname "$0")")"
+
+docker build -f "${BLDCTX}/action-base.Dockerfile" -t icinga/icinga2-builder "$BLDCTX"
+docker build -f "${BLDCTX}/deps.Dockerfile" -t icinga/icinga2-deps "$BLDCTX"
+
+docker run --rm -i \
+	-v "${I2SRC}:/i2src:ro" \
+	-v "${BLDCTX}:/bldctx:ro" \
+	-v "$(printf %s ~/.ccache):/root/.ccache" \
+	-v /var/run/docker.sock:/var/run/docker.sock \
+	icinga/icinga2-builder bash <<EOF
+set -exo pipefail
+
+git -C /i2src archive --prefix=i2cp/ HEAD |tar -xC /
+cp -r /i2src/.git /i2cp
+cd /i2cp
+
+/bldctx/compile.bash
+docker build -f /bldctx/Dockerfile -t icinga/icinga2 .
+EOF