mikaelhg

# Ubuntu 18.04 and various Docker images such as openjdk:9-jdk throw exceptions when
# Java applications use SSL and HTTPS, because Java 9 changed a file format, if you
# create that file from scratch, like Debian / Ubuntu do.
#
# Before applying, run your application with the Java command line parameter
#  java -Djavax.net.ssl.trustStorePassword=changeit ...
# to verify that this workaround is relevant to your particular issue.
#
# The parameter by itself can be used as a workaround, as well.

rlogiacco

#define DEBOUNCE 15
#define DMASK ((uint16_t)(1<<DEBOUNCE)-1)
#define DF (1<<(uint16_t)(DEBOUNCE-1))
#define DR (DMASK-DF)

// macro for detection of raising edge and debouncing
#define DRE(signal, state) ((state=((state<<1)|(signal&1))&DMASK)==DR)

// macro for detection of falling edge and debouncing
#define DFE(signal, state) ((state=((state<<1)|(signal&1))&DMASK)==DF)

oysteinjakobsen

Background

I assume you already have Docker up and running on your Raspberry Pi 2. If not, see this article.

The next natural step is to install Docker Compose (formerly Fig), but there's no ARM support out of the box. This recipe will help you install Docker Compose on your Raspberry Pi 2!

The following six steps will do the trick:

1. Get the docker-compose source code from git

soheilhy

Virtual Hosts on nginx (CSC309)

When hosting our web applications, we often have one public IP address (i.e., an IP address visible to the outside world) using which we want to host multiple web apps. For example, one may wants to host three different web apps respectively for example1.com, example2.com, and example1.com/images on the same machine using a single IP address.

How can we do that? Well, the good news is Internet browsers