Could not connect to the playwright process at port XXXXX

Libraries Browser
1

I’m facing an issue: I can’t run my automation using the Browser Library in Docker within a WSL environment. I’ve tried multiple Dockerfiles and entrypoints, but they all return the same error. I receive a message stating that the Playwright process was not found on port XXXXX, preventing the automation from starting the test.

I found other people on the internet reporting the same error, and they never found a solution. I can’t think of anything else to try. I’ve already tried Launch server, Connect server, and everything I could imagine, but I always get the same error message.

image
image1281×158 9.23 KB

Locally, everything works perfectly. The problem starts when I try to set up my automation in Docker on WSL. I need the automation to run in Docker because I will use it in a pipeline.

I’m coming here because I believe this might be the only place where I can get help. I have a lot of experience with automation in pipelines, and I’ve never faced a challenge as difficult as this one.

First dockerfile

# Use a imagem base do robotframework-browser na versão 16.0.2
FROM marketsquare/robotframework-browser:16.0.2

WORKDIR /python/ui_test_automation

COPY . .

CMD ["bash"]

Second dockerfile:

FROM mcr.microsoft.com/playwright:v1.50.0-noble

# Update apt-get
USER root
RUN apt-get update
RUN python3 --version
RUN apt install -y python3-pip python3.12-venv

# Clean up
USER root
RUN apt-get clean && \
    rm -rf /var/lib/apt/lists/*

# Set environment variables
ENV PATH="/home/pwuser/.local/bin:${PATH}"
ENV NODE_PATH=/usr/lib/node_modules

# Cache operations
USER root
RUN mv /root/.cache/ /home/pwuser/.cache || true
RUN chmod a+rwx -R /home/pwuser/.cache || true

# Switch to pwuser for the remaining operations
USER pwuser

# Print pip version
RUN pip3 --version

# Create venv and active it
RUN python3 -m venv /home/pwuser/.venv
ENV PATH="/home/pwuser/.venv/bin:$PATH"

RUN pip3 install --no-cache-dir --upgrade pip wheel

RUN pip3 install --no-cache-dir --upgrade robotframework robotframework-browser==19.3.0

RUN python3 -m Browser.entry init

RUN python3 -m pip install playwright
RUN playwright install
RUN rfbrowser init

WORKDIR /python/ui_test_automation


COPY . .

CMD ["tail", "-f", "/dev/null"]

My custom dockerfile:


FROM ubuntu:20.04

LABEL name="uiautomation"

ENV DEBIAN_FRONTEND=noninteractive
ENV DISPLAY=:99
ENV NVM_DIR=/root/.nvm
ENV PATH=$NVM_DIR/versions/node/v20.18.1/bin:$PATH
ENV TF_ENABLE_ONEDNN_OPTS=0
ENV TF_CPP_MIN_LOG_LEVEL=2
ENV PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION=python
ENV PYTHONPATH="/usr/local/lib/python3.8/dist-packages:/usr/src/app"
ENV DBUS_SESSION_BUS_ADDRESS="unix:path=/run/dbus/system_bus_socket"
ENV XDG_RUNTIME_DIR=/tmp
ENV DEBUG=pw:api
#ENV ROBOT_FRAMEWORK_BROWSER_NODE_PORT=9222


# Update the package repository and install essential tools
RUN apt-get update && apt-get upgrade -y \
    && apt-get install -y \
    python3-pip python3-dev python3-setuptools git build-essential \
    libffi-dev libjpeg-dev zlib1g-dev libstdc++6 libgcc1 libopencv-dev \
    alsa-utils libcups2 mesa-utils libxrandr2 fontconfig tzdata curl \
    libssl-dev libx11-xcb1 libxcb-dri3-0 libxi6 libxtst6 libwoff1 libxss1 \
    libasound2 libpangocairo-1.0-0 libatk-bridge2.0-0 libgtk-3-0 \
    libxml2 libxslt1.1 libevent-2.1-7 libgstreamer-gl1.0-0 \
    gstreamer1.0-plugins-base gstreamer1.0-tools gstreamer1.0-x \
    libflite1 libwebpdemux2 libharfbuzz-icu0 libenchant-2-2 \
    libsecret-1-0 libhyphen0 libdbus-glib-1-2 libxrender1 libpci3 \ 
    libevdev2 \
    libgles2  \
    x11-utils \
    libx11-6 \
    notification-daemon \
    dbus-x11 \
    dbus \
    sudo \
    systemctl \
    upower \
    xvfb wget \
    && apt-get clean

# Install NVM and Node.js
# RUN curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.40.1/install.sh | bash \
#     && . $NVM_DIR/nvm.sh \
#     && nvm install 20 \
#     && nvm use 20 \
#     && nvm alias default 20

RUN curl -sL https://deb.nodesource.com/setup_20.x  | bash -
RUN apt-get -y install nodejs

RUN wget -q https://dl.google.com/linux/direct/google-chrome-stable_current_amd64.deb && \
    dpkg -i google-chrome-stable_current_amd64.deb || apt-get install -fy && \
    rm google-chrome-stable_current_amd64.deb

RUN su
RUN echo "[D-BUS Service] \nName=org.freedesktop.Notifications\nExec=/usr/lib/notification-daemon/notification-daemon" > /usr/share/dbus-1/services/org.freedesktop.Notifications.service
RUN dbus-uuidgen > /etc/machine-id
# RUN sudo systemctl restart upower
RUN service dbus start

RUN Xvfb :99 -screen 0 1920x1080x24 &



# # Verify Node.js and npm
RUN node -v && npm -v

# # Upgrade pip
RUN pip3 install --upgrade pip

# #This is custom project dependencies with Robot, Browser and others
RUN pip3 install --no-cache-dir \
    git+https://username:pass@dev.azure.com/mycorporation/FIT/_git/UIAutomationCommons


RUN pip install playwright
RUN playwright install
RUN rfbrowser init

# Install Playwright and initialize Robot Framework Browser
# RUN npx playwright install chromium firefox \
#     && rfbrowser init

# # Set the working directory
WORKDIR /python/ui_test_automation

# RUN chmod u+x /usr/bin/Xvfb

# # Copy source code to the container
COPY . .

ENV NVM_DIR=/root/.nvm
ENV PATH=$NVM_DIR/versions/node/v20.18.1/bin:$PATH
RUN rfbrowser init

# Command to run the automation script
CMD ["bash", "-c", "dbus-daemon --system --nofork --nopidfile & xvfb-run google-chrome --headless --no-sandbox --remote-debugging-port=9222"]