From 08da1f6b1045a82e4e720f3de06176451aefcdf8 Mon Sep 17 00:00:00 2001
From: Rasmus Lauritsen <rasmus@lauritsen.info>
Date: Sat, 27 Jul 2024 22:24:07 +0200
Subject: [PATCH] first commit

---
 Dockerfile.bash          | 14 ++++++++++++++
 Dockerfile.python        | 11 +++++++++++
 Dockerfile.python-alpine | 14 ++++++++++++++
 hello_world-alpine.py    | 13 +++++++++++++
 hello_world.py           | 13 +++++++++++++
 hello_world.sh           | 14 ++++++++++++++
 readme.md                | 31 +++++++++++++++++++++++++++++++
 7 files changed, 110 insertions(+)
 create mode 100644 Dockerfile.bash
 create mode 100644 Dockerfile.python
 create mode 100644 Dockerfile.python-alpine
 create mode 100644 hello_world-alpine.py
 create mode 100644 hello_world.py
 create mode 100755 hello_world.sh
 create mode 100644 readme.md

diff --git a/Dockerfile.bash b/Dockerfile.bash
new file mode 100644
index 0000000..bcba489
--- /dev/null
+++ b/Dockerfile.bash
@@ -0,0 +1,14 @@
+# Use the official Ubuntu image as the base image
+FROM ubuntu:latest
+
+# Set the working directory
+WORKDIR /usr/src/app
+
+# Copy the hello_world.sh script into the container
+COPY hello_world.sh .
+
+# Make the script executable
+RUN chmod +x hello_world.sh
+
+# Run the script
+CMD ["./hello_world.sh"]
diff --git a/Dockerfile.python b/Dockerfile.python
new file mode 100644
index 0000000..7afc06e
--- /dev/null
+++ b/Dockerfile.python
@@ -0,0 +1,11 @@
+# Use the official Python image as the base image
+FROM python:3.9.19
+
+# Set the working directory
+WORKDIR /usr/src/app
+
+# Copy the hello_world.py script into the container
+COPY hello_world.py .
+
+# Run the script
+CMD ["python3", "hello_world.py"]
diff --git a/Dockerfile.python-alpine b/Dockerfile.python-alpine
new file mode 100644
index 0000000..d9e06c3
--- /dev/null
+++ b/Dockerfile.python-alpine
@@ -0,0 +1,14 @@
+# Use the official Python image as the base image
+FROM alpine:latest
+
+# Install python
+RUN apk add --no-cache python3
+
+# Set the working directory
+WORKDIR /usr/src/app
+
+# Copy the hello_world.py script into the container
+COPY hello_world-alpine.py .
+
+# Run the script
+CMD ["python3", "hello_world-alpine.py"]
diff --git a/hello_world-alpine.py b/hello_world-alpine.py
new file mode 100644
index 0000000..a3f7045
--- /dev/null
+++ b/hello_world-alpine.py
@@ -0,0 +1,13 @@
+import time
+
+# Total duration in seconds (10 minutes * 60 seconds)
+duration = 10 * 60
+# Interval between messages in seconds
+interval = 5
+# End time calculation
+end_time = time.time() + duration
+
+# Loop until the current time is less than the end time
+while time.time() < end_time:
+    print("Hello world - from Python in Alpine!")
+    time.sleep(interval)
diff --git a/hello_world.py b/hello_world.py
new file mode 100644
index 0000000..2c2139a
--- /dev/null
+++ b/hello_world.py
@@ -0,0 +1,13 @@
+import time
+
+# Total duration in seconds (10 minutes * 60 seconds)
+duration = 10 * 60
+# Interval between messages in seconds
+interval = 5
+# End time calculation
+end_time = time.time() + duration
+
+# Loop until the current time is less than the end time
+while time.time() < end_time:
+    print("Hello world - from Python!")
+    time.sleep(interval)
diff --git a/hello_world.sh b/hello_world.sh
new file mode 100755
index 0000000..5ea49d2
--- /dev/null
+++ b/hello_world.sh
@@ -0,0 +1,14 @@
+#!/bin/bash
+
+# Total duration in seconds (10 minutes * 60 seconds)
+DURATION=$((10 * 60))
+# Interval between messages in seconds
+INTERVAL=5
+# End time calculation
+END_TIME=$((SECONDS + DURATION))
+
+# Loop until the current time is less than the end time
+while [ $SECONDS -lt $END_TIME ]; do
+  echo "Hello world - from bash!"
+  sleep $INTERVAL
+done
diff --git a/readme.md b/readme.md
new file mode 100644
index 0000000..1db089c
--- /dev/null
+++ b/readme.md
@@ -0,0 +1,31 @@
+# Hello World in Docker
+
+## Bash
+```bash
+docker buildx build -t hello-world-bash -f Dockerfile.bash .
+docker run --rm --name "helloWorldBash" hello-world-bash 
+```
+
+## Python
+```bash
+docker buildx build -t hello-world-python -f Dockerfile.python .
+docker run --rm -it --name "helloWorldPython" hello-world-python
+```
+
+## Python in Alpine
+```bash
+docker buildx build -t hello-world-python-alpine -f Dockerfile.python-alpine .
+docker run --rm -it --name "helloWorldPythonAlpine" hello-world-python-alpine
+```
+
+# Let's see how much space each image takes up
+```bash
+docker images
+```
+
+```bash
+REPOSITORY                   TAG       IMAGE ID       CREATED          SIZE
+hello-world-bash             latest    7fab71e07670   21 seconds ago   101MB
+hello-world-python-alpine    latest    e42435db8b4a   30 minutes ago   53.4MB
+hello-world-python           latest    9fe43bb44dca   47 minutes ago   1GB
+```