Merge pull request #5 from commitd/je-docker

Add Docker CLI

Author: stuarthendren

Dockerfile

@@ -6,6 +6,7 @@ SHELL ["/bin/bash", "-o", "pipefail", "-c"]
 ENV MAVEN_VERSION 3.3.9
 ENV NODE_VERSION 10
 ENV HELM_VERSION 2.9.1
+ENV DOCKER_VERSION=19.03.7
 ENV CLOUD_SDK_REPO cloud-sdk-cosmic
 ENV PATH /opt/conda/bin:$PATH
 
@@ -75,5 +76,10 @@ RUN wget --quiet https://repo.anaconda.com/archive/Anaconda3-5.3.0-Linux-x86_64.
     echo ". /opt/conda/etc/profile.d/conda.sh" >> ~/.bashrc && \
     echo "conda activate base" >> ~/.bashrc
 
+# Docker-cli
+RUN wget --quiet https://download.docker.com/linux/static/stable/x86_64/docker-${DOCKER_VERSION}.tgz && \
+    tar -xzvf docker-${DOCKER_VERSION}.tgz --strip 1 -C /usr/local/bin docker/docker && \
+    rm docker-${DOCKER_VERSION}.tgz
+
 RUN apt-get clean && \
     rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*

README.md

@@ -30,6 +30,7 @@ The build tools included are:
 - **Ansible** 2.8.5
 - **Chrome** 80.0.3962.2 dev
 - **Anaconda3** 5.3.0
+- **Docker CLI** 19.03.7
 
 ## Use
 
@@ -42,6 +43,25 @@ The simplest use in a drone pipeline is shown below, you just have to provide th
     - build.sh
 ```
 
+To use docker, connect to the Docker daemon on the host machine by mounting the Docker socket as a volume:
+
+```yaml
+- name: build
+  image: committed/ci
+  commands:
+    - docker ps
+  volumes:
+    - name: docker_sock
+      path: /var/run/docker.sock
+
+...
+
+volumes:
+  - name: docker_sock
+    host:
+      path: /var/run/docker.sock
+```
+
 ## Development
 
 To build the docker image run:

test.sh

@@ -10,3 +10,4 @@ docker run --rm committed/ci ansible --version
 docker run --rm committed/ci google-chrome --version
 docker run --rm committed/ci conda --version
 docker run --rm committed/ci python -V
+docker run --rm committed/ci docker --version