From 6b2b33bdece6ad2a863bafd3941836b25584f5c0 Mon Sep 17 00:00:00 2001
From: Andreas Dangel <andreas.dangel@pmd-code.org>
Date: Thu, 12 Nov 2020 16:13:02 +0100
Subject: [PATCH] Add docker for testing

---
 .ci/README.md                                 | 22 +++++++++--
 .ci/docker_ubuntu18.04/Dockerfile             | 37 +++++++++++++++++++
 .../create-gh-pull-request-event.sh           | 10 +++++
 .ci/docker_ubuntu18.04/install-ruby.sh        |  8 ++++
 4 files changed, 73 insertions(+), 4 deletions(-)
 create mode 100644 .ci/docker_ubuntu18.04/Dockerfile
 create mode 100755 .ci/docker_ubuntu18.04/create-gh-pull-request-event.sh
 create mode 100755 .ci/docker_ubuntu18.04/install-ruby.sh

diff --git a/.ci/README.md b/.ci/README.md
index 96d6091bd4..13ec72eba0 100644
--- a/.ci/README.md
+++ b/.ci/README.md
@@ -55,11 +55,25 @@ is not protected.
 
 ### Local tests
 
-You can run a local instance with docker:
+Create a local docker container:
 
 ```
-docker run -it --mount type=bind,source=path/to/pmd,target=/workspaces/pmd/pmd ubuntu:latest
+cd .ci/docker_ubuntu18.04
+docker build -t pmd-ci .
 ```
 
-You'll need to install a few packages before you can start... You can verify with `check-environment.sh`
-if everything is prepared.
+This container is based on Ubuntu 18.04, which is used for `ubuntu-latest` github actions runner
+(see <https://github.com/actions/virtual-environments>).
+
+You can run a local instance with docker and mount your local pmd checkout into the container:
+
+```
+docker run -it --mount type=bind,source=path/to/pmd,target=/workspaces/pmd/pmd pmd-ci
+```
+
+You'll be dropped into a bash. Start e.g. with
+
+```
+cd workspaces/pmd/pmd
+.ci/check-environment.sh
+```
diff --git a/.ci/docker_ubuntu18.04/Dockerfile b/.ci/docker_ubuntu18.04/Dockerfile
new file mode 100644
index 0000000000..ae761efa59
--- /dev/null
+++ b/.ci/docker_ubuntu18.04/Dockerfile
@@ -0,0 +1,37 @@
+# https://hub.docker.com/_/ubuntu/
+FROM ubuntu:18.04
+
+RUN apt-get update && apt-get upgrade --yes && \
+    apt-get install --yes curl jq gpg rsync ssh git p7zip-full openjdk-8-jdk \
+                      libgdbm-dev libncurses5-dev automake libtool bison libffi-dev \
+                      sudo nano bash && \
+    apt-get clean
+RUN cd opt && \
+    curl https://mirror.checkdomain.de/apache/maven/maven-3/3.6.3/binaries/apache-maven-3.6.3-bin.tar.gz | tar xz && \
+    ln -sf /opt/apache-maven-3.6.3/bin/mvn /usr/local/bin/mvn && \
+    cd ..
+RUN groupadd --gid 1000 pmd-ci && useradd --gid 1000 --uid 1000 --groups sudo \
+             --shell /bin/bash --create-home --password "" \
+             pmd-ci
+
+RUN mkdir /workspaces && chown pmd-ci:pmd-ci /workspaces && ln -sf /workspaces /home/pmd-ci/workspaces
+
+USER pmd-ci:pmd-ci
+WORKDIR /home/pmd-ci
+ENV GITHUB_EVENT_PATH=/workspaces/event.json
+ENV GITHUB_REPOSITORY=pmd/pmd
+ENV GITHUB_ACTION=run1
+ENV GITHUB_EVENT_NAME=pull_request
+ENV PMD_CI_BRANCH=refs/heads/master
+ENV PMD_CI_PULL_REQUEST_NUMBER=2913
+COPY create-gh-pull-request-event.sh .
+COPY install-ruby.sh .
+RUN ./install-ruby.sh
+RUN ./create-gh-pull-request-event.sh
+
+CMD ["/bin/bash", "--login"]
+
+#
+# build with: docker build -t pmd-ci .
+# run with: docker run -it pmd-ci
+#
\ No newline at end of file
diff --git a/.ci/docker_ubuntu18.04/create-gh-pull-request-event.sh b/.ci/docker_ubuntu18.04/create-gh-pull-request-event.sh
new file mode 100755
index 0000000000..7f3576196e
--- /dev/null
+++ b/.ci/docker_ubuntu18.04/create-gh-pull-request-event.sh
@@ -0,0 +1,10 @@
+#!/usr/bin/env bash
+
+cat > /workspaces/event.json <<EOF
+{
+    "number": ${PMD_CI_PULL_REQUEST_NUMBER},
+    "repository": {
+        "clone_url": "https://github.com/pmd/pmd.git"
+    }
+}
+EOF
diff --git a/.ci/docker_ubuntu18.04/install-ruby.sh b/.ci/docker_ubuntu18.04/install-ruby.sh
new file mode 100755
index 0000000000..8faa361927
--- /dev/null
+++ b/.ci/docker_ubuntu18.04/install-ruby.sh
@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+
+gpg --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3 7D2BAF1CF37B13E2069D6956105BD0E739499BDB
+curl -sSL https://get.rvm.io | bash -s stable
+source ~/.rvm/scripts/rvm
+rvm install 2.7
+rvm use 2.7 --default
+ruby -v