a17a0e9a82
This is a "one-shot" ability, meaning that it is highly discouraged for multiple plugins to implement the triggers. The `builder-create-dokku-image` trigger is meant to modify the base DOKKU_IMAGE that will be used to build an application. A good use of the hook is to inject system packages by: - calculating an image tag from the set of system packages - checking that the image doesnt already exist - creating the image if it does not As the output is sent to stdout, we have to find an alternative way of fetching the new DOKKU_IMAGE. The `builder-dokku-image` trigger can output an image tag based on the calculated image tag. If no tag is output, then the DOKKU_IMAGE is used as is. Using this pattern, users can efficiently modify the base image in use for an app without duplicating the work on every push. This is especially useful for package installation, where packages are required for app building, but may take a long time and can be error prone.
55 lines
2.4 KiB
Bash
Executable File
55 lines
2.4 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -eo pipefail
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[[ $DOKKU_TRACE ]] && set -x
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source "$PLUGIN_AVAILABLE_PATH/config/functions"
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trigger-builder-build-builder-herokuish() {
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declare desc="builder-herokuish builder-build plugin trigger"
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declare trigger="trigger-builder-build-builder-herokuish"
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declare BUILDER_TYPE="$1" APP="$2" SOURCECODE_WORK_DIR="$3"
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if [[ "$BUILDER_TYPE" != "herokuish" ]]; then
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return
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fi
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local IMAGE=$(get_app_image_name "$APP")
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local DOKKU_APP_CACHE_DIR="$DOKKU_ROOT/$APP/cache"
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local DOKKU_APP_HOST_CACHE_DIR="$DOKKU_HOST_ROOT/$APP/cache"
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local DOCKER_COMMIT_LABEL_ARGS=("--change" "LABEL org.label-schema.schema-version=1.0" "--change" "LABEL org.label-schema.vendor=dokku" "--change" "LABEL com.dokku.app-name=$APP")
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local DOCKER_RUN_LABEL_ARGS="--label=com.dokku.app-name=$APP"
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local CID
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pushd "$SOURCECODE_WORK_DIR" &>/dev/null
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eval "$(config_export app "$APP")"
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DOKKU_IMAGE="$(config_get "$APP" DOKKU_IMAGE || echo "$DOKKU_IMAGE")"
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plugn trigger builder-create-dokku-image "$BUILDER_TYPE" "$APP" "$SOURCECODE_WORK_DIR" "$DOKKU_IMAGE"
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NEW_DOKKU_IMAGE=$(plugn trigger builder-dokku-image "$BUILDER_TYPE" "$APP" "$SOURCECODE_WORK_DIR" "$DOKKU_IMAGE")
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[[ -n "$NEW_DOKKU_IMAGE" ]] && DOKKU_IMAGE="$NEW_DOKKU_IMAGE"
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CID=$(tar -c . | "$DOCKER_BIN" run "${DOCKER_RUN_LABEL_ARGS[@]}" $DOKKU_GLOBAL_RUN_ARGS -i -a stdin "$DOKKU_IMAGE" /bin/bash -c "mkdir -p /app && tar -xC /app")
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test "$("$DOCKER_BIN" wait "$CID")" -eq 0
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"$DOCKER_BIN" commit "${DOCKER_COMMIT_LABEL_ARGS[@]}" "$CID" "$IMAGE" >/dev/null
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[[ -d $DOKKU_APP_CACHE_DIR ]] || mkdir -p "$DOKKU_APP_CACHE_DIR"
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plugn trigger pre-build-buildpack "$APP"
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local DOCKER_ARGS=$(: | plugn trigger docker-args-build "$APP" "$BUILDER_TYPE")
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[[ "$DOKKU_TRACE" ]] && DOCKER_ARGS+=" -e TRACE=true "
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DOCKER_ARGS+=$(: | plugn trigger docker-args-process-build "$APP" "$IMAGE_TAG" "$BUILDER_TYPE")
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declare -a ARG_ARRAY
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eval "ARG_ARRAY=($DOCKER_ARGS)"
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# shellcheck disable=SC2086
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CID=$("$DOCKER_BIN" run "${DOCKER_RUN_LABEL_ARGS[@]}" $DOKKU_GLOBAL_RUN_ARGS -d -v $DOKKU_APP_HOST_CACHE_DIR:/cache -e CACHE_PATH=/cache "${ARG_ARRAY[@]}" $IMAGE /build)
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"$DOCKER_BIN" attach "$CID"
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test "$("$DOCKER_BIN" wait "$CID")" -eq 0
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"$DOCKER_BIN" commit "${DOCKER_COMMIT_LABEL_ARGS[@]}" "$CID" "$IMAGE" >/dev/null
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plugn trigger post-build-buildpack "$APP"
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}
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trigger-builder-build-builder-herokuish "$@"
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