Add Dockerfile for the vale plugin.

See eclipse-che/che#15856

Signed-off-by: Eric Williams <ericwill@redhat.com>

.github/build-publish.yaml

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+#
+# Copyright (c) 2020 Red Hat, Inc.
+# This program and the accompanying materials are made
+# available under the terms of the Eclipse Public License 2.0
+# which is available at https://www.eclipse.org/legal/epl-2.0/
+#
+# SPDX-License-Identifier: EPL-2.0
+#
+
+name: Build and push container
+
+on:
+  push:
+    branches:
+      - '0.9.0'
+
+jobs:
+  build:
+    env:
+      IMAGE_NAME: quay.io/eclipse/che-sidecar-vale
+
+    runs-on: ubuntu-latest
+
+    steps:
+
+    - name: Clone source code
+      uses: actions/checkout@v1
+      with:
+        fetch-depth: 1
+
+    - name: Docker build
+      run: |
+        echo "Building image ${IMAGE_NAME}"
+        docker build -t ${IMAGE_NAME} .
+    - name: Docker publish
+      run: |
+        docker login -u "$DOCKER_USERNAME" -p "$DOCKER_PASSWORD" quay.io
+        GIT_BRANCH=$(echo "${GITHUB_REF}" | cut -d / -f 3)
+        echo "GIT_BRANCH is ${GIT_BRANCH} and GITHUB_REF is ${GITHUB_REF}"
+        GIT_TAG="latest"
+        if [[ "$GIT_BRANCH" != "master" ]]; then
+          GIT_TAG=${GIT_BRANCH}
+        fi
+        # Publish with tag name
+        echo "Publishing image ${IMAGE_NAME}:${GIT_TAG}"
+        docker tag "${IMAGE_NAME}" "${IMAGE_NAME}:${GIT_TAG}"
+        docker push "${IMAGE_NAME}:${GIT_TAG}"
+        # and with specific sha-1
+        echo "Publishing image ${IMAGE_NAME}:${GIT_TAG}-${SHORT_SHA1}"
+        SHORT_SHA1=$(git rev-parse --short HEAD)
+        docker tag "${IMAGE_NAME}" "${IMAGE_NAME}:${GIT_TAG}-${SHORT_SHA1}"
+        docker push "${IMAGE_NAME}:${GIT_TAG}-${SHORT_SHA1}"
+      env:
+        DOCKER_USERNAME: ${{ secrets.DOCKER_USERNAME }}
+        DOCKER_PASSWORD: ${{ secrets.DOCKER_PASSWORD }}
+

.github/pr-check.yaml

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+#
+# Copyright (c) 2020 Red Hat, Inc.
+# This program and the accompanying materials are made
+# available under the terms of the Eclipse Public License 2.0
+# which is available at https://www.eclipse.org/legal/epl-2.0/
+#
+# SPDX-License-Identifier: EPL-2.0
+#
+
+name: PR check
+
+on:
+  pull_request:
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+
+    - name: Clone source code
+      uses: actions/checkout@v1
+      with:
+        fetch-depth: 1
+
+    - name: Docker build
+      run: |
+        echo "Building image..."
+        docker build .

Dockerfile

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+# Copyright (c) 2020 Red Hat, Inc.
+# This program and the accompanying materials are made
+# available under the terms of the Eclipse Public License 2.0
+# which is available at https://www.eclipse.org/legal/epl-2.0/
+#
+# SPDX-License-Identifier: EPL-2.0
+#
+# Contributors:
+#   Red Hat, Inc. - initial API and implementation
+
+FROM alpine:3.11.3
+
+ENV HOME=/home/theia
+# 1.7.1 has a bug in the packaged executable, v2.0.0 is still in beta -- thus we are using 1.7.0
+ENV VALE_VERSION=1.7.0
+
+RUN mkdir /projects ${HOME} && \
+    # Change permissions to let any arbitrary user
+    for f in "${HOME}" "/etc/passwd" "/projects"; do \
+      echo "Changing permissions on ${f}" && chgrp -R 0 ${f} && \
+      chmod -R g+rwX ${f}; \
+    done && \
+    wget -qO- https://github.com/errata-ai/vale/releases/download/v${VALE_VERSION}/vale_${VALE_VERSION}_Linux_64-bit.tar.gz | tar xvz -C /usr/local/bin && \
+    chmod +x /usr/local/bin/vale && \
+    # Future word lists or config files can go here
+    mkdir ${HOME}/vale
+
+ADD etc/entrypoint.sh entrypoint.sh
+
+# Default vale.ini is needed
+ADD etc/vale.ini ${HOME}
+
+ENTRYPOINT [ "/entrypoint.sh" ]
+CMD ${PLUGIN_REMOTE_ENDPOINT_EXECUTABLE}

etc/entrypoint.sh

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+#!/bin/sh
+#
+# Copyright (c) 2020 Red Hat, Inc.
+# This program and the accompanying materials are made
+# available under the terms of the Eclipse Public License 2.0
+# which is available at https://www.eclipse.org/legal/epl-2.0/
+#
+# SPDX-License-Identifier: EPL-2.0
+#
+# Contributors:
+#   Red Hat, Inc. - initial API and implementation
+#
+
+set -e
+
+export USER_ID=$(id -u)
+export GROUP_ID=$(id -g)
+
+if ! whoami >/dev/null 2>&1; then
+    echo "${USER_NAME:-user}:x:${USER_ID}:0:${USER_NAME:-user} user:${HOME}:/bin/sh" >> /etc/passwd
+fi
+
+# Grant access to projects volume in case of non root user with sudo rights
+if [ "${USER_ID}" -ne 0 ] && command -v sudo >/dev/null 2>&1 && sudo -n true > /dev/null 2>&1; then
+    sudo chown "${USER_ID}:${GROUP_ID}" /projects
+fi
+
+exec "$@"
+

etc/vale.ini

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+# Copyright (c) 2020 Red Hat, Inc.
+# This program and the accompanying materials are made
+# available under the terms of the Eclipse Public License 2.0
+# which is available at https://www.eclipse.org/legal/epl-2.0/
+#
+# SPDX-License-Identifier: EPL-2.0
+#
+# Contributors:
+#   Red Hat, Inc. - initial API and implementation
+
+
+# Example Vale config file (`.vale.ini` or `_vale.ini`)
+
+# Core settings
+#
+# This path has to match the same path in the Dockerfile
+StylesPath = /home/theia/vale
+
+# The minimum alert level to display (suggestion, warning, or error).
+#
+# CI builds will only fail on error-level alerts.
+MinAlertLevel = warning
+
+# The "formats" section allows you to associate an "unknown" format
+# with one of Vale's supported formats.
+[formats]
+mdx = md
+
+# Global settings (applied to every syntax)
+[*]
+# List of styles to load
+BasedOnStyles = write-good, Joblint
+# Style.Rule = {YES, NO} to enable or disable a specific rule
+vale.Editorializing = YES
+# You can also change the level associated with a rule
+vale.Hedging = error
+
+# Syntax-specific settings
+# These overwrite any conflicting global settings
+[*.{md,txt}]
+vale.Editorializing = NO