made a makefile

+ added names of images and container in compose
+ have a functionnal nginx dockerfile

Makefile

@@ -0,0 +1,98 @@
+
+GRAY     = "\e[0;30m"
+RED      = "\e[0;31m"
+GREEN    = "\e[0;32m"
+YELLOW   = "\e[0;33m"
+BLUE     = "\e[0;34m"
+PURPLE   = "\e[0;35m"
+CYAN     = "\e[0;36m"
+WHITE    = "\e[0;37m"
+
+B_GRAY   = "\e[1;30m"
+B_RED    = "\e[1;31m"
+B_GREEN  = "\e[1;32m"
+B_YELLOW = "\e[1;33m"
+B_BLUE   = "\e[1;34m"
+B_PURPLE = "\e[1;35m"
+B_CYAN   = "\e[1;36m"
+B_WHITE  = "\e[1;37m"
+
+RESET    = "\e[0m"
+
+# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - #
+# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - #
+
+COMPOSE		=	./srcs/docker-compose.yml
+
+IMAGES		=	test \
+#				nginx
+
+HOME_D		=	$(shell echo $(HOME))
+
+VOLUMES_D	=	$(VOLUMES:%=$(HOME_D)/%)
+VOLUMES		=	v_wp_site \
+				v_wp_db
+
+CONTAINERS	=	$(IMAGES:%=my%)
+
+
+
+# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - #
+# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - #
+
+all: build $(VOLUMES_D) up
+
+$(VOLUMES_D):
+	mkdir -p $(VOLUMES_D)
+
+build:
+	sudo docker-compose -f $(COMPOSE) build
+
+up: $(VOLUMES_D)
+	sudo docker-compose -f $(COMPOSE) up
+
+# list images, containers, volumes
+list:
+	@echo $(B_YELLOW)"\nimages:"$(RESET)
+	@sudo docker images -a
+	@echo $(B_YELLOW)"\ncontainers:"$(RESET)
+	@sudo docker ps -a
+	@echo $(B_YELLOW)"\nvolumes:"$(RESET)
+	@sudo docker volume ls
+	@echo ""
+
+# remove project images
+rm-images:
+	sudo docker image rm -f $(IMAGES)
+
+# stop project containers
+stop:
+	- sudo docker stop $(CONTAINERS)
+
+# remove project containers
+rm-containers: stop
+	- sudo docker rm $(CONTAINERS)
+
+# remove project images and containers
+clean: rm-images stop rm-containers
+
+# remove project volumes
+rm-volumes:
+	- sudo docker volume rm -f $(VOLUMES)
+	/bin/rm -rf $(VOLUMES_D)
+
+# remove project
+fclean: clean rm-volumes
+
+# remove all dockers
+ffclean:
+	sudo docker stop $(sudo docker ps -q)
+	sudo docker system prune -af --volumes
+	/bin/rm -rf $(VOLUMES_D)
+
+re: fclean all
+
+rre: ffclean all
+
+.PHONY : all build up $(VOLUMES_D) list rm-images stop rm-containers clean rm-volumes fclean ffclean re rre
+

README.md

@@ -15,6 +15,20 @@ This README would normally document whatever steps are necessary to get your app
 - `sudo netstat -tulpn` to print network connections and see if nginx is running
 - or : `ps -ax | grep nginx`
 - `sudo nginx -s quit` to stop it
+- `sudo docker system prune -af --volumes` -> `-a` also unused images, `-f` without prompt for confirmation
+	- remove stopped containers
+	- remove unused networks
+	- remove unused images
+	- remove build cache
+- `sudo docker ps -q` all runnings containers
+- `sudo docker stop $(sudo docker ps -q)` stop all runnings containers
+**remove project images**					rm-images		sudo docker image rm -f <name> <name> ...
+**stop   project containers**				stop			sudo docker stop <name> <name> ...
+**remove project containers**				rm-containers	sudo docker rm <name> <name> ...
+**remove project images and containers**	clean			rm-images stop rm-containers
+**remove project volumes**					rm-volumes		sudo docker volume rm -f <name> <name> ...
+**remove project**							fclean			clean rm-volumes
+**remove all dockers**						ffclean			sudo docker stop $(sudo docker ps -q); sudo docker system prune -af --volumes
 
 ---
 ## Dockerfile basics
@@ -28,12 +42,25 @@ This README would normally document whatever steps are necessary to get your app
 
 - [download alpine linux](https://alpinelinux.org/downloads/)
 - [dockerhub alpine image](https://hub.docker.com/_/alpine)
+- [docker starter guide](https://docs.docker.com/get-started/)
 - [docker glossaire](https://docs.docker.com/glossary/)
 - [Dockerfile syntaxe](https://docs.docker.com/engine/reference/builder/)
 - [determine the parent image](https://forums.docker.com/t/determine-the-parent-image/48611)
 - [docker image from scratch](https://codeburst.io/docker-from-scratch-2a84552470c8)
 - [build context and image context](https://stackoverflow.com/questions/55108649/what-is-app-working-directory-for-a-dockerfile/55109065#55109065)
+- [nginx begginer guide](https://hub.docker.com/_/nginx/)
+
+#### docker pid 1
+
+- nginx by default will create some child process (a master and some workers), then it quits (doc ?)
+- when the first process of a docker container exit, the container exit (doc ?)
+- so we must tell nginx to not go background : "-g 'daemon off'"
 - [pid1 docker problem](https://blog.phusion.nl/2015/01/20/docker-and-the-pid-1-zombie-reaping-problem/)
+- [official nginx docker image](https://hub.docker.com/_/nginx/)
+- "If you add a custom CMD in the Dockerfile, be sure to include -g daemon off; in the CMD in order for nginx to stay in the foreground, so that Docker can track the process properly (otherwise your container will stop immediately after starting)!"
+- [SO discussion on "-g 'daemon off'"](https://stackoverflow.com/questions/18861300/how-to-run-nginx-within-a-docker-container-without-halting)
+- "When PID 1 exits, the container will exit" (where is says in the doc ?)
+- ["By design, containers started in detached mode exit when the root process used to run the container exits"](https://docs.docker.com/engine/reference/run/#detached--d)
 
 #### install and use docker and compose
 
@@ -64,9 +91,11 @@ This README would normally document whatever steps are necessary to get your app
 **build and run a docker image**
 - be in directory with a Dockerfile
 - `sudo docker build --tag <name> .`
-- `sudo docker images` to list images
 - `sudo docker run <name>`
-- `sudo docker image rm -f <number-id>`
+- `sudo docker images` to list docker images
+- `sudo docker image rm <number>`
+- `sudo docker ps` to list docker processes
+- `sudo docker ps rm <name>`
 **execute a docker-compose file**
 - be in directory with a docker-compose.yml file
 - `sudo docker-compose up`

srcs/docker-compose.yml

@@ -12,3 +12,9 @@ services:
     build:
       context: ./requirements/test
       dockerfile: Dockerfile
+    image: test
+    container_name: mytest
+#  test:
+#    build:
+#      context: ./requirements/test
+#      dockerfile: Dockerfile

srcs/requirements/nginx/Dockerfile

@@ -7,5 +7,5 @@ COPY ./conf/inception_nginx.conf /etc/nginx/conf.d/
 COPY ./conf/index.html /data/www/
 COPY ./conf/salade.jpeg /data/images/
 
-CMD [ "nginx" ]
+CMD [ "nginx", "-g", "daemon off;" ]