Bootstrap repo

Closes #1 (closed)

ci/build.sh

+#!/bin/sh -e
+# Build the tasks Docker image.
+# Requires CI_PROJECT_DIR and CI_REGISTRY_IMAGE to be set.
+# VERSION defaults to latest.
+# Will automatically login to a registry if CI_REGISTRY, CI_REGISTRY_USER and CI_REGISTRY_PASSWORD are set.
+# Will only push an image if $CI_REGISTRY is set.
+
+if [ -z "$VERSION" ]; then
+	VERSION=${CI_COMMIT_TAG:-latest}
+fi
+
+if [ -z "$VERSION" -o -z "$CI_PROJECT_DIR" -o -z "$CI_REGISTRY_IMAGE" ]; then
+	echo Missing environment variables
+	exit 1
+fi
+
+IMAGE_TAG="$CI_REGISTRY_IMAGE:$VERSION"
+
+cd $CI_PROJECT_DIR
+docker build -f Dockerfile . -t "$IMAGE_TAG"
+
+# Publish the image on the main branch or on a tag
+if [ "$CI_COMMIT_REF_NAME" = "main" -o -n "$CI_COMMIT_TAG" ]; then
+  if [ -n "$CI_REGISTRY" -a -n "$CI_REGISTRY_USER" -a -n "$CI_REGISTRY_PASSWORD" ]; then
+    echo $CI_REGISTRY_PASSWORD | docker login -u $CI_REGISTRY_USER --password-stdin $CI_REGISTRY
+    docker push $IMAGE_TAG
+  else
+    echo "Missing environment variables to log in to the container registry…"
+  fi
+else
+  echo "The build was not published to the repository registry (only for main branch or tags)…"
+fi