export PS1='\[\033[01;34m\][\[\033[01;37m\] \W\[\033[01;34m\]]\$\033[01;34m\] $(git branch 2>/dev/null | grep '^*' | colrm 1 2)\n\033[01;34m└─>\033[37m '

retval() {
        if [ $? -eq 0 ]; then
                printf ""
        else
                printf "\001\e[31m\002($?)\001\e[0m\002"
        fi
}

gitbranch() {
        if type git 2> /dev/null 1> /dev/null && git rev-parse 2> /dev/null 1> /dev/null ; then
                MODIFIED=""
                if [[ -n $(git status --short) ]]; then
                        MODIFIED=" M"
                fi
                BRANCH=$(git rev-parse --abbrev-ref HEAD)
                SHORTREF=$(git rev-parse --short HEAD)
                printf "\001\e[31m\002%s\001\e[0m\002(%s)\001\e[31m\002%s\001\e[0m\002" $BRANCH $SHORTREF $MODIFIED
        else
                echo -n ""
        fi
}

export PROMPT_DIRTRIM=3

PS1='$(retval)[\001\e[1;95m\002\u\001\e[0m\002@\h : \w $(gitbranch)] \$ '
PS2='> '

Mine shows the user and host, git commit and branch, docker context and directory, color coded based on status of git:

[root@server001|G:19e526e@(master)|D:myContext|currentDir] $

## PS1 adapted from https://gist.github.com/xenji/2292341
ps1_generator() {
    # docker context inspect --format '{{ .Name }}'
    Time12h="\T"; Time12a="\@"; ShortHost="\h"; Username="\u";
    PathShort="\W"; PathFull="\w"; NewLine="\n"; Jobs="\j";
    test -f ~/.config/git-prompt.sh || \
        curl -L https://raw.github.com/git/git/master/contrib/compl
etion/git-prompt.sh \
             > ~/.config/git-prompt.sh
    source ~/.config/git-prompt.sh
    Color_Off="\[\033[0m\]"; IBlack="\[\033[0;90m\]"; BWhite="\[\03
3[1;37m\]"; BGreen="\[\033[1;32m\]";
    BIRed="\[\033[1;91m\]"; BIWhite="\[\033[1;97m\]"; BIPurple="\[\
033[1;95m\]"; BIBlue="\[\033[1;94m\]";
    GIT_PS1='$(git branch &>/dev/null;\
if [ $? -eq 0 ]; then \
  echo "$(echo `git status` | \grep "nothing to commit" > /dev/null
 2>&1; \
  DIRTY="$?"; \
  HEADREV=`git log --pretty=%h -n 1`; \
  echo -n "|G:'${BWhite}'$HEADREV"; \
  if [ "$DIRTY" -eq "0" ]; then \
    # @4 - Clean repository - nothing to commit
    echo "@'${BGreen}'"$(__git_ps1 "(%s)"); \
  else \
    # @5 - Changes to working tree
    echo "'${BIBlue}'@'${BIRed}'"$(__git_ps1 "{%s}"); \
  fi)'${Color_Off}'"; \
else \
  # @2 - Prompt when not in GIT repo
  echo ""; \
fi)'
    if docker context inspect >/dev/null 2>&1; then
        DOCKER_PS1='|D:'${BIBlue}'$(docker context inspect --format
 "{{ .Name }}")'${Color_Off}
    fi
    USER_PS1=${BIPurple}${Username}'@'${ShortHost}${Color_Off}
    PATH_PS1='|'${BWhite}${PathShort}${Color_Off}
    export PS1='['${USER_PS1}${GIT_PS1}${DOCKER_PS1}${PATH_PS1}'] $
 '
}
ps1_generator && unset -f ps1_generator

My shit is custom and rather elaborate.

From left-to-right:

• name@server-name
• Uptime (multiplied by 10 and rounded to the nearest integer to save space)
• Percentage disk space available on /
• Number on established network connections
• Git branch : commit
• Python virtualenv
• [new line]
• date and time

The code for this is on GitLab.