noelbundick

# We set an environment variable in this phase so it gets picked up by pip, but we don't want to bake secrets into our container image
FROM python:3.6-alpine AS builder

ARG INDEX_URL
ENV PIP_EXTRA_INDEX_URL=$INDEX_URL

COPY requirements.txt .

RUN pip install -U pip \
    && pip install --user -r requirements.txt

pjobson

Remove USB Guard From Ubuntu

If you're a sucker like me and installed usbguard on a Ubuntu variant you may find that you will have access to none of your usb devices at all, because F you. The installer automatically sets up the daemon which has no rules so will just block all of your devices. Doing a basic apt remove usbguard may fail at 25%, because also F you.

My kernel is version 4.15.0-47-generic, not sure if this stopped working at some point or what.

Regain Access

sudo echo "allow id *:*" > /etc/usbguard/rules.conf

sudo sed -i 's/PresentDevicePolicy=apply-policy/PresentDevicePolicy=allow/' /etc/usbguard/usbguard-daemon.conf

ryochin

FROM debian:stable-slim

ENV DEBIAN_FRONTEND noninteractive
RUN apt-get update && apt-get install -y --no-install-recommends \
  build-essential libssl-dev ca-certificates wget git \
  libpcre3 libpcre3-dev zlib1g zlib1g-dev \
  && apt-get clean

WORKDIR /tmp
RUN git clone --depth=1 https://github.com/chobits/ngx_http_proxy_connect_module.git ngx_http_proxy_connect_module \

diegopacheco

sudo apt-get install autoconf automake libtool curl make g++ unzip -y
git clone https://github.com/google/protobuf.git
cd protobuf
git submodule update --init --recursive
./autogen.sh
make
make check
sudo make install
sudo ldconfig

tiantuxu

# Decode a video to yuv420 raw format
ffmpeg -vsync 0 -c:v h264_cuvid -i input.mp4 -c:v rawvideo -pix_fmt yuv420p -f null /dev/null
ffmpeg -vsync 0 -c:v h264_cuvid -i input.mp4 -c:v rawvideo -pix_fmt yuv420p output.yuv

# Resize videos to 640x480
ffmpeg -c:v h264_cuvid -i input.mp4 -vf scale=640:480 -c:v h264_nvenc output.mp4

# Downsampling frame rate to 30fps
ffmpeg -i input.mp4 -r 30 -c:v h264_nvenc output.mp4

erikyo

// --------- Max Dissolved Oxigen Saturation ------------//
//
// Equation for the Henry coefficient as a function of temperature and salinity is used to calculate values 
// for unit standard atmospheric concentrations (USAC) in freshwater and seawater in equilibrium with air at a total pressure 
// of 1 atmosphere. It is estimated that the possible error in the new USAC values is no greater than $\pm 0.1%$ and probably less. 
// Tables and equations are presented for obtaining accurate USAC values in the ranges $0^\circ < t < 40^\cir C and 0 < S < 40$. 
// Simple procedures are given for calculating standard atmospheric concentrations at pressures different from 1 atm. 
// 
// Reference https://water.usgs.gov/software/DOTABLES/
// Dissolved oxygen (DO) solubility over a range of user-specified values for 

jmbjorndalen

#!/usr/bin/env python3
# Combining coroutines running in an asyncio event loop with 
# blocking tasks in thread pool and process pool executors.
# 
# Based on https://pymotw.com/3/asyncio/executors.html, but this version runs both
# threads and processes at the same time and interleaves them with asyncio coroutines.
# 
# All appears to be working. 
#

nlohmann

def remove_empty_elements(d):
    """recursively remove empty lists, empty dicts, or None elements from a dictionary"""

    def empty(x):
        return x is None or x == {} or x == []

    if not isinstance(d, (dict, list)):
        return d
    elif isinstance(d, list):
        return [v for v in (remove_empty_elements(v) for v in d) if not empty(v)]

praveenweb

# ---- Base python ----
FROM python:3.6 AS base
# Create app directory
WORKDIR /app

# ---- Dependencies ----
FROM base AS dependencies  
COPY gunicorn_app/requirements.txt ./
# install app dependencies
RUN pip install -r requirements.txt

ahadyekta

#First install the webp converter by this
sudo apt-get install webp


#go inside the directory where all images are there
#make sure all images are in RGB color mode, otherwise you will get error for CMYK images.
#Convert all images to RGB by this command (you should install ImageMagik to do that)
for f in *.jpg; do convert -colorspace RGB "$f" "${f}"; done

#finally convert all images to Webp format