Initial commit.

build.sh

@@ -0,0 +1,37 @@
+#!/bin/bash
+
+# build.sh checks if docker image with same sha256 exists remotely.
+# if exists, do nothing, if not, build the image
+
+commit_sha="${DRONE_COMMIT_SHA}"
+image_path="${REGISTRY}${REGISTRY_PROJECT}"
+
+if [ "${DRONE_TAG}" != "" ]; then
+    tag="${DRONE_TAG}"
+else
+    tag="${DRONE_COMMIT_SHA}"
+fi
+
+# Starting Docker daemon.
+/usr/local/bin/dockerd --data-root=/var/lib/docker --max-concurrent-uploads 1 &
+
+# Wait for it.
+echo "* Waiting for Docker daemon to start..."
+while true; do
+    if docker ps &>/dev/null; then
+        break
+    fi
+done
+
+echo "* Logging in to registry..."
+docker login -u "${REGISTRY_USERNAME}" -p "${REGISTRY_PASSWORD}" "${REGISTRY}"
+
+echo "* Building docker image ${image_path}:${tag}..."
+
+if docker manifest inspect "${image_path}:${tag}" >/dev/null; then
+    echo "* Docker image ${image_path}:${tag} is already exists on remote, no rebuilt necessary."
+    exit 0
+fi
+
+docker build --pull --build-arg VCS_REF="${commit_sha}" --build-arg VCS_URL="${image_path}" --tag "${image_path}:${tag}" .
+docker push "${image_path}:${tag}"