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You can use:

app="rabbitmq" if docker ps | awk -v app="app" 'NR>1{ ($(NF) == app ) }'; then docker stop "$app" && docker rm -f "$app" fi 

• awk command gets a command line var app from BASH's variable
• "$app". NR>1 skips first header row from docker ps command.
• ($(NF) == app ) last column NAMES is equal to app variable

You can use:

app="rabbitmq" if docker ps | awk -v app="$app" 'NR > 1 && $NF == app{ret=1; exit} END{exit !ret}'; then docker stop "$app" && docker rm -f "$app" fi 

• awk command gets a command line var app from BASH's variable $app
• NR>1 skips first header row from docker ps command.
• $(NF) == app Compare last column NAMES is equal to app variable or not

You can use:

app="rabbitmq" if docker ps | awk -v app="$app" 'NR>1{exit ($2 !~ app)}'; then   docker stop "$app" && docker rm -f "$app" fi 

awk command gets a command line var app from BASH's variable "$app". NR>1 skips first header row from docker ps command. $2 !~ app means if content of $app don't match with column 2 which is IMAGE column and exit returns appropriate exit status i.e. 0 if match succeeds and 1 if if it doesn't due !~ operator.

You can use:

app="rabbitmq" if docker ps | awk -v app="app" 'NR>1{  ($(NF) == app ) }'; then docker stop "$app" && docker rm -f "$app" fi 

• awk command gets a command line var app from BASH's variable
• "$app". NR>1 skips first header row from docker ps command.
• ($(NF) == app ) last column NAMES is equal to app variable

You can use:

app="rabbitmq" if docker ps | awk -v app="$app" 'NR>1{exit ($2 !~ app)}'; then docker stop "$app" && docker rm -f "$app" fi 

You can use:

app="rabbitmq" if docker ps | awk -v app="$app" 'NR>1{exit ($2 !~ app)}'; then docker stop "$app" && docker rm -f "$app" fi 

awk command gets a command line var app from BASH's variable "$app". NR>1 skips first header row from docker ps command. $2 !~ app means if content of $app don't match with column 2 which is IMAGE column and exit returns appropriate exit status i.e. 0 if match succeeds and 1 if if it doesn't due !~ operator.