docs(notes): add workshop notes

notes/01_environment.md

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+# Docker Environment
+
+## Installing Docker
+You can install Docker by following the instructions on the [official Docker website](https://docs.docker.com/get-docker/).
+
+## Docker Desktop
+If you are using Windows or macOS, you can install Docker Desktop. Docker Desktop is a tool that allows you to run Docker containers on your local machine. You can download Docker Desktop from the [official Docker website](https://www.docker.com/products/docker-desktop).
+
+## Running your first container
+To run your first container, you can use the following command:
+```bash
+docker run hello-world
+```

notes/02_first_steps.md

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+# First Steps
+
+Meine Umgebung
+- Windows 11
+- WSL2
+- Docker Desktop
+
+Switching from windows to linux containers
+- Right click on the docker icon in the taskbar
+- Select "Switch to Linux containers"
+
+```bash
+
+# Run a container
+docker run hello-world
+docker run -d nginx
+
+# Show containers
+docker ps
+docker ps -a
+
+# Inspect a container
+docker inspect <container_id>
+
+# Stop a container
+docker stop <container_id>
+
+# Start a container
+docker start <container_id>
+
+# Delete a container
+docker stop <container_id>
+docker rm <container_id>
+docker rm -f <container_id>
+
+# Not having to type the full container id
+docker rm <container_start_of_id>
+
+# Giving a container a name
+docker run --name webserver1 -d nginx
+
+# Exec into a container
+docker exec -it <container_name> bash
+
+# -it vs -d
+# Zu vergleichen mit Windows Fenster, dass sich schließt, wenn das Programm beendet ist
+docker run -d nginx
+docker run -it nginx
+```

notes/03_running_a_webserver.md

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+# Running a webserver
+
+```bash
+# Expose a port
+docker run -d -p 8080:80 --name webserver1 nginx
+
+# Example with Windows Containers
+docker run -d -p 8000:80 --name my-running-site mcr.microsoft.com/windows/servercore/iis
+
+# Logs anschauen
+# Zu vergleichen mit Ereignisanzeige
+# Auf Std Out und Std Err
+docker logs <container_name>
+docker logs -f <container_name>
+
+# Edit the default web page
+docker exec -it webserver1 bash
+  echo "Hello World" > /usr/share/nginx/html/index.html
+
+# Expose a second webserver
+docker run -d -p 8081:80 --name webserver2 httpd
+
+# Networks
+docker network ls
+docker network inspect bridge
+docker network inspect host
+```

notes/04_volumes_and_storage.md

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+# Volumes and Storage
+
+Bild zeichnen
+Pods erstellen und die default webseite in einem Volume speichern
+
+```bash
+# bind mount
+docker run -d -p 8080:80 --name webserver1 -v <host_dir>:/usr/share/nginx/html nginx
+# show in docker desktop
+# show in explorer
+
+# Volume
+# Löscht den Inhalt des Volumes nicht
+docker volume ls
+docker volume create my_volume
+docker volume inspect <volume_name>
+
+docker run -d -p 8080:80 --name webserver1 -v my_volume:/usr/share/nginx/html nginx
+```

notes/05_recap.md

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+# Recap vom ersten Teil
+
+Pods erstellen und die default webseite anzeigen/bearbeiten
+
+```bash
+# Containers
+docker ps -a
+# Networks
+docker network ls
+# Volumes
+docker volume ls
+
+# Configure a container with env vars
+docker run -d -p 8080:8080 kodekloud/webapp-color
+docker run -d -p 8080:8080 -e APP_COLOR=green kodekloud/webapp-color
+```

notes/06_building_images.md

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+# Eigene Images erstellen
+
+Eigene Images
+
+```bash
+# Alle Images anzeigen
+docker images
+
+# Image Tags
+# Image Layers
+# Dockerfile
+
+docker build .
+docker build -t my-webserver:0.0.1 .
+docker build -t svengerber/my-webserver:0.0.1 .
+
+docker login
+docker push svengerber/my-webserver:0.0.1
+docker logout
+
+# Multi-Stage Builds
+docker build -t hello .
+docker run -p 8080:8080 -it hello
+```

notes/06_custom_image/multi-stage/Dockerfile

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+FROM bitnami/golang:1.13 as builder
+RUN go get github.com/urfave/negroni
+COPY server.go /
+RUN CGO_ENABLED=0 GOOS=linux go build -o /server /server.go
+
+FROM alpine:latest
+RUN apk --no-cache add ca-certificates
+WORKDIR /app/
+COPY --from=builder /server /app/server
+COPY page.html .
+ENV PORT=8080
+ENTRYPOINT ["/app/server"]

notes/06_custom_image/multi-stage/page.html

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+<html>
+  <head>
+    <title>Hello From my Mini Container</title>
+  </head>
+  <body>
+    <strong>Hello From my Mini Container!</strong>
+  </body>
+</html>

notes/06_custom_image/multi-stage/server.go

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+package main
+
+import (
+	"fmt"
+	"io/ioutil"
+	"net/http"
+
+	"github.com/urfave/negroni"
+)
+
+func main() {
+	mux := http.NewServeMux()
+	mux.HandleFunc("/", func(w http.ResponseWriter, req *http.Request) {
+		t, _ := ioutil.ReadFile("page.html")
+		fmt.Fprintf(w, string(t))
+	})
+
+	n := negroni.Classic()
+	n.UseHandler(mux)
+
+	n.Run()
+}

notes/06_custom_image/simple/Dockerfile

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+FROM nginx:1.25.3
+
+COPY index.html /usr/share/nginx/html/index.html
+COPY confetti.gif /usr/share/nginx/html/confetti.gif
+
+LABEL maintainer="Sven Gerber"
+
+EXPOSE 80
+
+RUN touch /usr/share/nginx/html/myfile.html
+RUN echo "Hello World" > /usr/share/nginx/html/myfile.html
+
+#USER myuser:mygroup
+
+CMD ["nginx", "-g", "daemon off;"]

notes/06_custom_image/simple/index.html

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+<!DOCTYPE html>
+<html>
+    <head>
+        <title>Custom Image</title>
+    </head>
+    <body>
+        <h1>Hello from my custom image</h1>
+        <p>This is a custom image.</p>
+        <img src="./confetti.gif" alt="Confetti">
+    </body> 
+</html>

notes/07_docker_compose.md

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+# Docker Compose 
+
+Abhängigkeiten zwischen Containern verwalten
+
+```bash
+# Docker Compose File erklären
+
+# Der Sinn von Docker Compose
+docker compose up
+docker compose up -d
+```

notes/07_docker_compose/docker-compose.yml

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+services:
+  db:
+    image: mariadb:10.6.4-focal
+    command: '--default-authentication-plugin=mysql_native_password'
+    volumes:
+      - db_data:/var/lib/mysql
+    restart: always
+    environment:
+      - MYSQL_ROOT_PASSWORD=somewordpress
+      - MYSQL_DATABASE=wordpress
+      - MYSQL_USER=wordpress
+      - MYSQL_PASSWORD=wordpress
+    expose:
+      - 3306
+      - 33060
+  wordpress:
+    image: wordpress:latest
+    volumes:
+      - wp_data:/var/www/html
+    ports:
+      - 8080:80
+      - 8443:443
+    restart: always
+    environment:
+      - WORDPRESS_DB_HOST=db
+      - WORDPRESS_DB_USER=wordpress
+      - WORDPRESS_DB_PASSWORD=wordpress
+      - WORDPRESS_DB_NAME=wordpress
+volumes:
+  db_data:
+  wp_data: