Add personal image with hadolint

.drone.yml

@@ -16,6 +16,18 @@ steps:
       password:
         from_secret: docker_password
 
+  - name: push personal image
+    image: plugins/docker
+    settings:
+      repo: iamthefij/drone-pre-commit
+      dockerfile: ./Dockerfile.personal
+      tags:
+        - personal
+      username:
+        from_secret: docker_username
+      password:
+        from_secret: docker_password
+
 ---
 kind: pipeline
 name: notify

Dockerfile.personal

@@ -0,0 +1,8 @@
+ARG BASE_IMAGE=iamthefij/drone-pre-commit
+FROM ${BASE_IMAGE}:base
+
+# Add helper scripts
+COPY ./scripts /scripts
+
+# Bundle hadolint
+RUN /scripts/add_hadolint.sh

Makefile

@@ -12,6 +12,11 @@ test: build
 .PHONY: build
 build: ./Dockerfile
 	docker build -t $(DOCKER_TAG) .
+	docker tag "$(DOCKER_TAG):latest" "$(DOCKER_TAG):base"
+
+.PHONY: build-personal
+build-personal: build ./Dockerfile.personal
+	docker build --build-arg "BASE_IMAGE=$(DOCKER_TAG)" -f ./Dockerfile.personal .
 
 .PHONY: install-hooks
 install-hooks:

Readme.md

@@ -24,6 +24,12 @@ steps:
       - pre-commit run --all-files
 ```
 
+## Personal image
+
+A second image is also built for my personal use, but it may be useful to you as well. This image includes the following dependencies:
+
+  * hadolint
+
 ## To Do
 
 So far this is basic and unopinionated. Either this will become very personal as I tack on dependencies for the hooks I often use, or it'll become complicated as I add args for everything and build out many tags. I think I'll probbably try to provide some reasonable base image that can then be extended in a new image or as part of one's build pipeline.

scripts/add_hadolint.sh

@@ -0,0 +1,6 @@
+#! /bin/bash
+set -ex
+
+VERSION=v1.18.0
+wget -L -O /usr/bin/hadolint "https://github.com/hadolint/hadolint/releases/download/${VERSION}/hadolint-Linux-x86_64"
+chmod +x /usr/bin/hadolint