1#!/usr/bin/env python3
2#
3# Build the required docker image to run package unit tests
4#
5# Script Variables:
6#   DOCKER_IMG_NAME:  <optional, the name of the docker image to generate>
7#                     default is openbmc/ubuntu-unit-test
8#   DISTRO:           <optional, the distro to build a docker image against>
9#                     default is ubuntu:eoan
10#   BRANCH:           <optional, branch to build from each of the openbmc/
11#                     repositories>
12#                     default is master, which will be used if input branch not
13#                     provided or not found
14#   UBUNTU_MIRROR:    <optional, the URL of a mirror of Ubuntu to override the
15#                     default ones in /etc/apt/sources.list>
16#                     default is empty, and no mirror is used.
17#   http_proxy        The HTTP address of the proxy server to connect to.
18#                     Default: "", proxy is not setup if this is not set
19
20import os
21import sys
22from sh import docker, git, nproc, uname
23
24# Read a bunch of environment variables.
25docker_image_name = os.environ.get("DOCKER_IMAGE_NAME", "openbmc/ubuntu-unit-test")
26distro = os.environ.get("DISTRO", "ubuntu:focal")
27branch = os.environ.get("BRANCH", "master")
28ubuntu_mirror = os.environ.get("UBUNTU_MIRROR")
29http_proxy = os.environ.get("http_proxy")
30
31# Set up some common variables.
32proc_count = nproc().strip()
33username = os.environ.get("USER")
34homedir = os.environ.get("HOME")
35gid = os.getgid()
36uid = os.getuid()
37
38# Determine the architecture for Docker.
39arch = uname("-m").strip()
40if arch == "ppc64le":
41    docker_base = "ppc64le/"
42elif arch == "x86_64":
43    docker_base = ""
44else:
45    print(f"Unsupported system architecture({arch}) found for docker image")
46    sys.exit(1)
47
48# Packages to include in image.
49packages = {
50    "boost": {"rev": "1.74.0"},
51    "cereal": {"rev": "v1.3.0"},
52    "catch2": {"rev": "v2.12.2"},
53    "CLI11": {"rev": "v1.9.0"},
54    "fmt": {"rev": "6.2.1"},
55    # Snapshot from 2020-01-03
56    "function2": {"rev": "3a0746bf5f601dfed05330aefcb6854354fce07d"},
57    # Snapshot from 2020-02-13
58    "googletest": {"rev": "23b2a3b1cf803999fb38175f6e9e038a4495c8a5"},
59    # Release 2020-08-06
60    "json": {"rev": "v3.9.1"},
61    # Snapshot from 2019-05-24
62    "lcov": {"rev": "75fbae1cfc5027f818a0bb865bf6f96fab3202da"},
63    # dev-5.0 2019-05-03
64    "linux-headers": {"rev": "8bf6567e77f7aa68975b7c9c6d044bba690bf327"},
65    # Snapshot from 2019-09-03
66    "libvncserver": {"rev": "1354f7f1bb6962dab209eddb9d6aac1f03408110"},
67    "span-lite": {"rev": "v0.7.0"},
68    # version from meta-openembedded/meta-oe/recipes-support/libtinyxml2/libtinyxml2_5.0.1.bb
69    "tinyxml2": {"rev": "37bc3aca429f0164adf68c23444540b4a24b5778"},
70    # version from /meta-openembedded/meta-oe/recipes-devtools/boost-url/boost-url_git.bb
71    "boost-url": {"rev": "a56ae0df6d3078319755fbaa67822b4fa7fd352b"},
72    # version from meta-openembedded/meta-oe/recipes-devtools/valijson/valijson_git.bb
73    "valijson": {"rev": "c2f22fddf599d04dc33fcd7ed257c698a05345d9"},
74    # version from meta-openembedded/meta-oe/recipes-devtools/nlohmann-fifo/nlohmann-fifo_git.bb
75    "fifo_map": {"rev": "0dfbf5dacbb15a32c43f912a7e66a54aae39d0f9"},
76    "open-power/pdbg": {},
77    "openbmc/gpioplus": {},
78    "openbmc/phosphor-dbus-interfaces": {},
79    "openbmc/phosphor-logging": {},
80    "openbmc/phosphor-objmgr": {},
81    "openbmc/pldm": {},
82    "openbmc/sdbusplus": {},
83    "openbmc/sdeventplus": {},
84    "openbmc/stdplus": {},
85}
86
87def pkg_rev(pkg):
88    return packages[pkg]["rev"]
89
90def pkg_stagename(pkg):
91    if not pkg.startswith("openbmc/"):
92        pkg = "openbmc/" + pkg
93    return pkg.replace("/", "-")
94
95# Look up the HEAD for missing a static rev.
96pkg_lookups = {}
97for pkg in packages.keys():
98    if "rev" in packages[pkg]:
99        continue
100    pkg_lookups[pkg] = git(
101        "ls-remote", "--heads", f"https://github.com/{pkg}", _bg=True
102    )
103for pkg, result in pkg_lookups.items():
104    for line in result.stdout.decode().split("\n"):
105        if f"refs/heads/{branch}" in line:
106            packages[pkg]["rev"] = line.strip().split()[0]
107        elif "refs/heads/master" in line and p not in packages:
108            packages[pkg]["rev"] = line.strip().split()[0]
109
110# Create the contents of the '/tmp/depcache'.
111# This needs to be sorted for consistency.
112depcache = ""
113for pkg in sorted(packages.keys()):
114    depcache += "%s:%s," % (pkg, pkg_rev(pkg))
115
116# Define common flags used for builds
117prefix = "/usr/local"
118configure_flags = " ".join(
119    [
120        f"--prefix={prefix}",
121    ]
122)
123cmake_flags = " ".join(
124    [
125        "-DCMAKE_BUILD_TYPE=RelWithDebInfo",
126        "-DBUILD_SHARED_LIBS=ON",
127        f"-DCMAKE_INSTALL_PREFIX:PATH={prefix}",
128    ]
129)
130meson_flags = " ".join(
131    [
132        "--wrap-mode=nodownload",
133        f"-Dprefix={prefix}",
134    ]
135)
136
137# Build the commands needed to compose our final image
138# We must sort the packages, otherwise we might produce an unstable
139# docker file and rebuild the image unnecessarily
140copy_cmds = ""
141for pkg in sorted(packages.keys()):
142    copy_cmds += f"COPY --from={pkg_stagename(pkg)} {prefix} {prefix}\n"
143    # Workaround for upstream docker bug and multiple COPY cmds
144    # https://github.com/moby/moby/issues/37965
145    copy_cmds += "RUN true\n"
146
147# Special flags if setting up a deb mirror.
148mirror = ""
149if "ubuntu" in distro and ubuntu_mirror:
150    mirror = f"""
151RUN echo "deb {ubuntu_mirror} $(. /etc/os-release && echo $VERSION_CODENAME) main restricted universe multiverse" > /etc/apt/sources.list && \\
152    echo "deb {ubuntu_mirror} $(. /etc/os-release && echo $VERSION_CODENAME)-updates main restricted universe multiverse" >> /etc/apt/sources.list && \\
153    echo "deb {ubuntu_mirror} $(. /etc/os-release && echo $VERSION_CODENAME)-security main restricted universe multiverse" >> /etc/apt/sources.list && \\
154    echo "deb {ubuntu_mirror} $(. /etc/os-release && echo $VERSION_CODENAME)-proposed main restricted universe multiverse" >> /etc/apt/sources.list && \\
155    echo "deb {ubuntu_mirror} $(. /etc/os-release && echo $VERSION_CODENAME)-backports main restricted universe multiverse" >> /etc/apt/sources.list
156"""
157
158# Special flags for proxying.
159proxy_cmd = ""
160proxy_args = []
161if http_proxy:
162    proxy_cmd = f"""
163RUN echo "[http]" >> {homedir}/.gitconfig && \
164    echo "proxy = {http_proxy}" >> {homedir}/.gitconfig
165"""
166    proxy_args.extend(
167        [
168            "--build-arg",
169            f"http_proxy={http_proxy}",
170            "--build-arg",
171            "https_proxy={https_proxy}",
172        ]
173    )
174
175# Create docker image that can run package unit tests
176dockerfile = f"""
177FROM {docker_base}{distro} as openbmc-base
178
179{mirror}
180
181ENV DEBIAN_FRONTEND noninteractive
182
183ENV PYTHONPATH "/usr/local/lib/python3.8/site-packages/"
184
185# We need the keys to be imported for dbgsym repos
186# New releases have a package, older ones fall back to manual fetching
187# https://wiki.ubuntu.com/Debug%20Symbol%20Packages
188RUN apt-get update && ( apt-get install ubuntu-dbgsym-keyring || ( apt-get install -yy dirmngr && \
189    apt-key adv --keyserver keyserver.ubuntu.com --recv-keys F2EDC64DC5AEE1F6B9C621F0C8CAB6595FDFF622 ) )
190
191# Parse the current repo list into a debug repo list
192RUN sed -n '/^deb /s,^deb [^ ]* ,deb http://ddebs.ubuntu.com ,p' /etc/apt/sources.list >/etc/apt/sources.list.d/debug.list
193
194# Remove non-existent debug repos
195RUN sed -i '/-\(backports\|security\) /d' /etc/apt/sources.list.d/debug.list
196
197RUN cat /etc/apt/sources.list.d/debug.list
198
199RUN apt-get update && apt-get dist-upgrade -yy && apt-get install -yy \
200    gcc-10 \
201    g++-10 \
202    libc6-dbg \
203    libc6-dev \
204    libtool \
205    bison \
206    libdbus-1-dev \
207    flex \
208    cmake \
209    python3 \
210    python3-dev\
211    python3-yaml \
212    python3-mako \
213    python3-pip \
214    python3-setuptools \
215    python3-git \
216    python3-socks \
217    pkg-config \
218    autoconf \
219    autoconf-archive \
220    libsystemd-dev \
221    systemd \
222    libssl-dev \
223    libevdev-dev \
224    libevdev2-dbgsym \
225    libjpeg-dev \
226    libpng-dev \
227    ninja-build \
228    sudo \
229    curl \
230    git \
231    dbus \
232    iputils-ping \
233    clang-10 \
234    clang-format-10 \
235    clang-tidy-10 \
236    clang-tools-10 \
237    shellcheck \
238    npm \
239    iproute2 \
240    libnl-3-dev \
241    libnl-genl-3-dev \
242    libconfig++-dev \
243    libsnmp-dev \
244    valgrind \
245    valgrind-dbg \
246    libpam0g-dev \
247    xxd \
248    libi2c-dev \
249    wget \
250    libldap2-dev \
251    libprotobuf-dev \
252    libperlio-gzip-perl \
253    libjson-perl \
254    protobuf-compiler \
255    libgpiod-dev \
256    device-tree-compiler \
257    cppcheck \
258    libpciaccess-dev \
259    libmimetic-dev \
260    libxml2-utils \
261    libxml-simple-perl
262
263RUN update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-10 1000 \
264  --slave /usr/bin/g++ g++ /usr/bin/g++-10 \
265  --slave /usr/bin/gcov gcov /usr/bin/gcov-10 \
266  --slave /usr/bin/gcov-dump gcov-dump /usr/bin/gcov-dump-10 \
267  --slave /usr/bin/gcov-tool gcov-tool /usr/bin/gcov-tool-10
268
269
270RUN update-alternatives --install /usr/bin/clang clang /usr/bin/clang-10 1000 \
271  --slave /usr/bin/clang++ clang++ /usr/bin/clang++-10 \
272  --slave /usr/bin/clang-tidy clang-tidy /usr/bin/clang-tidy-10 \
273  --slave /usr/bin/clang-format clang-format /usr/bin/clang-format-10 \
274  --slave /usr/bin/run-clang-tidy.py run-clang-tidy.py /usr/bin/run-clang-tidy-10.py
275
276RUN pip3 install inflection
277RUN pip3 install pycodestyle
278RUN pip3 install jsonschema
279RUN pip3 install meson==0.54.3
280RUN pip3 install protobuf
281
282FROM openbmc-base as {pkg_stagename('lcov')}
283RUN curl -L https://github.com/linux-test-project/lcov/archive/{pkg_rev('lcov')}.tar.gz | tar -xz && \
284cd lcov-* && \
285make -j{proc_count} && \
286make install
287
288FROM openbmc-base as {pkg_stagename('function2')}
289RUN mkdir {prefix}/include/function2 && \
290curl -L -o {prefix}/include/function2/function2.hpp https://raw.githubusercontent.com/Naios/function2/{pkg_rev('function2')}/include/function2/function2.hpp
291
292FROM openbmc-base as {pkg_stagename('googletest')}
293RUN curl -L https://github.com/google/googletest/archive/{pkg_rev('googletest')}.tar.gz | tar -xz && \
294cd googletest-* && \
295mkdir build && \
296cd build && \
297CXXFLAGS=-std=c++17 cmake {cmake_flags} -DTHREADS_PREFER_PTHREAD_FLAG=ON .. && \
298make -j{proc_count} && \
299make install
300
301FROM openbmc-base as {pkg_stagename('catch2')}
302RUN curl -L https://github.com/catchorg/Catch2/archive/{pkg_rev('catch2')}.tar.gz | tar -xz && \
303cd Catch2-* && \
304mkdir build && \
305cd build && \
306cmake {cmake_flags} -DBUILD_TESTING=OFF -DCATCH_INSTALL_DOCS=OFF .. && \
307make -j{proc_count} && \
308make install
309
310FROM openbmc-base as {pkg_stagename('cereal')}
311RUN curl -L https://github.com/USCiLab/cereal/archive/{pkg_rev('cereal')}.tar.gz | tar -xz && \
312cp -a cereal-*/include/cereal/ {prefix}/include/
313
314FROM openbmc-base as {pkg_stagename('CLI11')}
315RUN curl -L https://github.com/CLIUtils/CLI11/archive/{pkg_rev('CLI11')}.tar.gz | tar -xz && \
316cd CLI11-* && \
317mkdir build && \
318cd build && \
319cmake {cmake_flags} -DCLI11_BUILD_DOCS=OFF -DBUILD_TESTING=OFF -DCLI11_BUILD_EXAMPLES=OFF .. && \
320make -j{proc_count} && \
321make install
322
323FROM openbmc-base as {pkg_stagename('fmt')}
324RUN curl -L https://github.com/fmtlib/fmt/archive/{pkg_rev('fmt')}.tar.gz | tar -xz && \
325cd fmt-* && \
326mkdir build && \
327cd build && \
328cmake {cmake_flags} -DFMT_DOC=OFF -DFMT_TEST=OFF .. && \
329make -j{proc_count} && \
330make install
331
332FROM openbmc-base as {pkg_stagename('json')}
333RUN mkdir {prefix}/include/nlohmann/ && \
334curl -L -o {prefix}/include/nlohmann/json.hpp https://github.com/nlohmann/json/releases/download/{pkg_rev('json')}/json.hpp && \
335ln -s nlohmann/json.hpp {prefix}/include/json.hpp
336
337FROM openbmc-base as {pkg_stagename('fifo_map')}
338RUN curl -L https://github.com/nlohmann/fifo_map/archive/{pkg_rev('fifo_map')}.tar.gz | tar -xz && \
339cd fifo_map-*/src && cp fifo_map.hpp {prefix}/include/
340
341FROM openbmc-base as {pkg_stagename('span-lite')}
342RUN curl -L https://github.com/martinmoene/span-lite/archive/{pkg_rev('span-lite')}.tar.gz | tar -xz && \
343cd span-lite-* && \
344mkdir build && \
345cd build && \
346cmake {cmake_flags} -DSPAN_LITE_OPT_BUILD_TESTS=OFF .. && \
347make -j{proc_count} && \
348make install
349
350FROM openbmc-base as {pkg_stagename('linux-headers')}
351RUN curl -L https://github.com/openbmc/linux/archive/{pkg_rev('linux-headers')}.tar.gz | tar -xz && \
352cd linux-* && \
353make -j{proc_count} defconfig && \
354make INSTALL_HDR_PATH=/usr/local headers_install
355
356FROM openbmc-base as {pkg_stagename('boost')}
357RUN curl -L https://dl.bintray.com/boostorg/release/{pkg_rev('boost')}/source/boost_$(echo "{pkg_rev('boost')}" | tr '.' '_').tar.bz2 | tar -xj && \
358cd boost_*/ && \
359./bootstrap.sh --prefix={prefix} --with-libraries=context,coroutine && \
360./b2 && ./b2 install --prefix={prefix}
361
362FROM openbmc-base as {pkg_stagename('tinyxml2')}
363RUN curl -L https://github.com/leethomason/tinyxml2/archive/{pkg_rev('tinyxml2')}.tar.gz | tar -xz && \
364cd tinyxml2-* && \
365mkdir build && \
366cd build && \
367cmake {cmake_flags} .. && \
368make -j{proc_count} && \
369make install
370
371FROM openbmc-base as {pkg_stagename('boost-url')}
372RUN curl -L https://github.com/CPPAlliance/url/archive/{pkg_rev('boost-url')}.tar.gz | tar -xz && \
373cd url-* && \
374mkdir buildir && \
375cd buildir && \
376cmake {cmake_flags} -DBOOST_URL_STANDALONE=ON -DBOOST_URL_BUILD_TESTS=OFF -DBOOST_URL_BUILD_EXAMPLES=OFF .. && \
377make -j{proc_count} && \
378make install
379
380FROM openbmc-base as {pkg_stagename('valijson')}
381RUN curl -L https://github.com/tristanpenman/valijson/archive/{pkg_rev('valijson')}.tar.gz | tar -xz && \
382cd valijson-* && \
383mkdir build && \
384cd build && \
385cmake {cmake_flags} -DINSTALL_HEADERS=1 -DBUILD_TESTS=0 .. && \
386make -j{proc_count} && \
387make install
388
389FROM openbmc-base as {pkg_stagename('libvncserver')}
390RUN curl -L https://github.com/LibVNC/libvncserver/archive/{pkg_rev('libvncserver')}.tar.gz | tar -xz && \
391cd libvncserver-* && \
392mkdir build && \
393cd build && \
394cmake {cmake_flags} .. && \
395make -j{proc_count} && \
396make install
397
398FROM openbmc-base as {pkg_stagename('openbmc/stdplus')}
399COPY --from={pkg_stagename('fmt')} {prefix} {prefix}
400COPY --from={pkg_stagename('span-lite')} {prefix} {prefix}
401RUN curl -L https://github.com/openbmc/stdplus/archive/{pkg_rev('openbmc/stdplus')}.tar.gz | tar -xz && \
402cd stdplus-* && \
403meson build {meson_flags} -Dtests=disabled -Dexamples=false && \
404ninja -C build && \
405ninja -C build install
406
407FROM openbmc-base as {pkg_stagename('openbmc/sdbusplus')}
408RUN curl -L https://github.com/openbmc/sdbusplus/archive/{pkg_rev('openbmc/sdbusplus')}.tar.gz | tar -xz && \
409cd sdbusplus-* && \
410cd tools && ./setup.py install --root=/ --prefix={prefix} && \
411cd .. && meson build {meson_flags} -Dtests=disabled -Dexamples=disabled && \
412ninja -C build && \
413ninja -C build install
414
415FROM openbmc-base as {pkg_stagename('openbmc/sdeventplus')}
416COPY --from={pkg_stagename('function2')} {prefix} {prefix}
417COPY --from={pkg_stagename('openbmc/stdplus')} {prefix} {prefix}
418RUN curl -L https://github.com/openbmc/sdeventplus/archive/{pkg_rev('openbmc/sdeventplus')}.tar.gz | tar -xz && \
419cd sdeventplus-* && \
420meson build {meson_flags} -Dtests=disabled -Dexamples=false && \
421ninja -C build && \
422ninja -C build install
423
424FROM openbmc-base as {pkg_stagename('openbmc/gpioplus')}
425COPY --from={pkg_stagename('openbmc/stdplus')} {prefix} {prefix}
426RUN curl -L https://github.com/openbmc/gpioplus/archive/{pkg_rev('openbmc/gpioplus')}.tar.gz | tar -xz && \
427cd gpioplus-* && \
428meson build {meson_flags} -Dtests=disabled -Dexamples=false && \
429ninja -C build && \
430ninja -C build install
431
432FROM openbmc-base as {pkg_stagename('openbmc/phosphor-dbus-interfaces')}
433COPY --from={pkg_stagename('openbmc/sdbusplus')} {prefix} {prefix}
434RUN curl -L https://github.com/openbmc/phosphor-dbus-interfaces/archive/{pkg_rev('openbmc/phosphor-dbus-interfaces')}.tar.gz | tar -xz && \
435cd phosphor-dbus-interfaces-* && \
436meson build {meson_flags} -Ddata_org_open_power=true -Ddata_com_ibm=true && \
437ninja -C build && \
438ninja -C build install
439
440FROM openbmc-base as {pkg_stagename('openbmc/phosphor-logging')}
441COPY --from={pkg_stagename('cereal')} {prefix} {prefix}
442COPY --from={pkg_stagename('openbmc/sdbusplus')} {prefix} {prefix}
443COPY --from={pkg_stagename('openbmc/sdeventplus')} {prefix} {prefix}
444COPY --from={pkg_stagename('openbmc/phosphor-dbus-interfaces')} {prefix} {prefix}
445COPY --from={pkg_stagename('fifo_map')} {prefix} {prefix}
446RUN curl -L https://github.com/openbmc/phosphor-logging/archive/{pkg_rev('openbmc/phosphor-logging')}.tar.gz | tar -xz && \
447cd phosphor-logging-* && \
448./bootstrap.sh && \
449./configure {configure_flags} --enable-metadata-processing YAML_DIR={prefix}/share/phosphor-dbus-yaml/yaml && \
450make -j{proc_count} && \
451make install
452
453FROM openbmc-base as {pkg_stagename('openbmc/phosphor-objmgr')}
454COPY --from={pkg_stagename('boost')} {prefix} {prefix}
455COPY --from={pkg_stagename('openbmc/sdbusplus')} {prefix} {prefix}
456COPY --from={pkg_stagename('tinyxml2')} {prefix} {prefix}
457COPY --from={pkg_stagename('openbmc/phosphor-logging')} {prefix} {prefix}
458RUN curl -L https://github.com/openbmc/phosphor-objmgr/archive/{pkg_rev('openbmc/phosphor-objmgr')}.tar.gz | tar -xz && \
459cd phosphor-objmgr-* && \
460./bootstrap.sh && \
461./configure {configure_flags} && \
462make -j{proc_count} && \
463make install
464
465FROM openbmc-base as {pkg_stagename('open-power/pdbg')}
466RUN curl -L https://github.com/open-power/pdbg/archive/{pkg_rev('open-power/pdbg')}.tar.gz | tar -xz && \
467cd pdbg-* && \
468./bootstrap.sh && \
469./configure {configure_flags} && \
470make -j{proc_count} && \
471make install
472
473FROM openbmc-base as {pkg_stagename('openbmc/pldm')}
474COPY --from={pkg_stagename('openbmc/sdbusplus')} {prefix} {prefix}
475COPY --from={pkg_stagename('openbmc/sdeventplus')} {prefix} {prefix}
476COPY --from={pkg_stagename('boost')} {prefix} {prefix}
477COPY --from={pkg_stagename('openbmc/phosphor-dbus-interfaces')} {prefix} {prefix}
478COPY --from={pkg_stagename('openbmc/phosphor-logging')} {prefix} {prefix}
479COPY --from={pkg_stagename('json')} {prefix} {prefix}
480COPY --from={pkg_stagename('CLI11')} {prefix} {prefix}
481RUN curl -L https://github.com/openbmc/pldm/archive/{pkg_rev('openbmc/pldm')}.tar.gz | tar -xz && \
482cd pldm-* && \
483meson build {meson_flags} -Dlibpldm-only=enabled -Doem-ibm=enabled -Dtests=disabled && \
484ninja -C build && \
485ninja -C build install
486
487# Build the final output image
488FROM openbmc-base
489{copy_cmds}
490
491# Some of our infrastructure still relies on the presence of this file
492# even though it is no longer needed to rebuild the docker environment
493# NOTE: The file is sorted to ensure the ordering is stable.
494RUN echo '{depcache}' > /tmp/depcache
495
496# Final configuration for the workspace
497RUN grep -q {gid} /etc/group || groupadd -g {gid} {username}
498RUN mkdir -p "{os.path.dirname(homedir)}"
499RUN grep -q {uid} /etc/passwd || useradd -d {homedir} -m -u {uid} -g {gid} {username}
500RUN sed -i '1iDefaults umask=000' /etc/sudoers
501RUN echo "{username} ALL=(ALL) NOPASSWD: ALL" >>/etc/sudoers
502
503{proxy_cmd}
504
505RUN /bin/bash
506"""
507
508# Do the docker build.
509for line in docker.build(
510    proxy_args,
511    "--network=host",
512    "-t",
513    docker_image_name,
514    "-",
515    _in=dockerfile,
516    _iter=True,
517):
518    print(line, end="", flush=True)
519