[master] b46a77b76 introduce bob

[Guillaume Quintard]

commit b46a77b7624e28c4837d716432c9b66190a28add
Author: Guillaume Quintard <guillaume at varnish-software.com>
Date:   Wed Mar 31 17:50:32 2021 -0700

    introduce bob

diff --git a/.circleci/Dockerfile b/.circleci/Dockerfile
new file mode 100644
index 000000000..7553611e0
--- /dev/null
+++ b/.circleci/Dockerfile
@@ -0,0 +1,15 @@
+FROM centos:7
+
+RUN set -e;\
+	yum install -y epel-release; \
+	yum install -y \
+	    automake \
+	    git \
+	    jemalloc-devel \
+	    libedit-devel \
+	    libtool \
+	    libunwind-devel \
+	    make \
+	    pcre-devel \
+	    python3 \
+	    python-sphinx
diff --git a/.circleci/Dockerfile.alpine b/.circleci/Dockerfile.alpine
new file mode 100644
index 000000000..c09aa9d5a
--- /dev/null
+++ b/.circleci/Dockerfile.alpine
@@ -0,0 +1,20 @@
+FROM alpine
+
+RUN set -e; \
+	apk update; \
+	apk add -q \
+	    autoconf \
+	    automake \
+	    build-base \
+	    ca-certificates \
+	    cpio \
+	    git \
+	    gzip \
+	    libedit-dev \
+	    libtool \
+	    libunwind-dev \
+	    linux-headers \
+	    pcre-dev \
+	    py-docutils \
+	    py3-sphinx \
+	    tar
diff --git a/.circleci/Dockerfile.archlinux b/.circleci/Dockerfile.archlinux
new file mode 100644
index 000000000..1e6344354
--- /dev/null
+++ b/.circleci/Dockerfile.archlinux
@@ -0,0 +1,16 @@
+FROM archlinux
+
+RUN set -e; \
+	pacman -Sy --noconfirm \
+	       base-devel \
+	       ca-certificates \
+	       cpio \
+	       git \
+	       libedit \
+	       libtool \
+	       libunwind \
+	       linux-headers \
+	       pcre \
+	       python-docutils \
+	       python-sphinx \
+	       tar
diff --git a/.circleci/Dockerfile.ubuntu b/.circleci/Dockerfile.ubuntu
new file mode 100644
index 000000000..cc50bd3a0
--- /dev/null
+++ b/.circleci/Dockerfile.ubuntu
@@ -0,0 +1,22 @@
+FROM ubuntu
+
+RUN set -e; \
+	export DEBIAN_FRONTEND=noninteractive; \
+	export DEBCONF_NONINTERACTIVE_SEEN=true; \
+	apt-get update; \
+	apt-get install -y \
+	    autoconf \
+	    automake \
+	    build-essential \
+	    ca-certificates \
+	    cpio \
+	    git \
+	    graphviz \
+	    libedit-dev \
+	    libjemalloc-dev \
+	    libncurses-dev \
+	    libpcre3-dev \
+	    libtool \
+	    libunwind-dev \
+	    pkg-config \
+	    python3-sphinx