glances/docker-files/alpine.Dockerfile

#
# Glances Dockerfile (based on Alpine)
#
# https://github.com/nicolargo/glances
#

# WARNING: the versions should be set.
# Ex: Python 3.11 for Alpine 3.18
# Note: ENV is for future running containers. ARG for building your Docker image.

ARG IMAGE_VERSION=3.18.0
ARG PYTHON_VERSION=3.11

FROM alpine:${IMAGE_VERSION} as build
ARG PYTHON_VERSION

RUN apk add --no-cache \
  python3 \
  python3-dev \
  py3-pip \
  py3-wheel \
  musl-dev \
  linux-headers \
  build-base \
  libzmq \
  zeromq-dev \
  curl \
  lm-sensors \
  wireless-tools \
  smartmontools \
  iputils \
  tzdata \
  # Required for 'cryptography' dependency of optional requirement 'cassandra-driver' \
  # Refer: https://cryptography.io/en/latest/installation/#alpine \
  # `git` required to clone cargo crates (dependencies)
  gcc libffi-dev openssl-dev cargo pkgconfig git

##############################################################################
# Install the dependencies beforehand to make them cacheable

FROM build as buildRequirements
ARG PYTHON_VERSION

COPY requirements.txt .
RUN pip3 install --no-cache-dir --user -r requirements.txt

# Minimal means no webui, but it break what is done previously (see #2155)
# So install the webui requirements...
COPY webui-requirements.txt .
RUN pip3 install --no-cache-dir --user -r webui-requirements.txt

# As minimal image we want to monitor others docker containers
RUN pip3 install --no-cache-dir --user docker

# Force install otherwise it could be cached without rerun
ARG CHANGING_ARG
RUN pip3 install --no-cache-dir --user glances

##############################################################################

FROM build as buildOptionalRequirements
ARG PYTHON_VERSION

# Required for optional dependency cassandra-driver
ENV CASS_DRIVER_NO_CYTHON=1
# See issue 2368
ENV CARGO_NET_GIT_FETCH_WITH_CLI=true

COPY requirements.txt .
COPY optional-requirements.txt .
RUN pip3 install --no-cache-dir --user -r optional-requirements.txt

##############################################################################
# full image
##############################################################################

FROM build as full
ARG PYTHON_VERSION

COPY --from=buildRequirements /root/.local/bin /usr/local/bin/
COPY --from=buildRequirements /root/.local/lib/python${PYTHON_VERSION}/site-packages /usr/lib/python${PYTHON_VERSION}/site-packages/
COPY --from=buildOptionalRequirements /root/.local/lib/python${PYTHON_VERSION}/site-packages /usr/lib/python${PYTHON_VERSION}/site-packages/
COPY ./docker-compose/glances.conf /etc/glances.conf

# EXPOSE PORT (XMLRPC / WebUI)
EXPOSE 61209 61208

# Define default command.
WORKDIR /glances
CMD python3 -m glances -C /etc/glances.conf $GLANCES_OPT

##############################################################################
# minimal image
##############################################################################

# Create running images without any building dependency
FROM alpine:${IMAGE_VERSION} as minimal
ARG PYTHON_VERSION

RUN apk add --no-cache \
  python3 \
  py3-packaging \
  py3-dateutil \
  py3-requests \
  curl \
  lm-sensors \
  wireless-tools \
  smartmontools \
  iputils \
  tzdata

COPY --from=buildRequirements /root/.local/bin /usr/local/bin/
COPY --from=buildRequirements /root/.local/lib/python${PYTHON_VERSION}/site-packages /usr/lib/python${PYTHON_VERSION}/site-packages/
COPY ./docker-compose/glances.conf /etc/glances.conf

# EXPOSE PORT (XMLRPC / WebUI)
EXPOSE 61209 61208

# Define default command.
WORKDIR /glances
CMD python3 -m glances -C /etc/glances.conf $GLANCES_OPT

##############################################################################
# dev image
##############################################################################

FROM full as dev
ARG PYTHON_VERSION

COPY --from=buildRequirements /root/.local/bin /usr/local/bin/
COPY --from=buildRequirements /root/.local/lib/python${PYTHON_VERSION}/site-packages /usr/lib/python${PYTHON_VERSION}/site-packages/
COPY --from=buildOptionalRequirements /root/.local/lib/python${PYTHON_VERSION}/site-packages /usr/lib/python${PYTHON_VERSION}/site-packages/
COPY ./docker-compose/glances.conf /etc/glances.conf

# Copy the current Glances source code
COPY . /glances

# EXPOSE PORT (XMLRPC / WebUI)
EXPOSE 61209 61208

# Forward access and error logs to Docker's log collector
RUN ln -sf /dev/stdout /tmp/glances-root.log \
    && ln -sf /dev/stderr /var/log/error.log

# Define default command.
WORKDIR /glances
CMD python3 -m glances -C /etc/glances.conf $GLANCES_OPT