added optional env FORCE_CPU and updated README (makeplane#4446)

Author: mguptahub

deploy/selfhost/README.md

@@ -96,7 +96,7 @@ This will prompt you with the below options.
 
 ```bash
 Select a Action you want to perform:
-   1) Install (arm64)
+   1) Install (x86_64)
    2) Start
    3) Stop
    4) Restart
@@ -344,7 +344,7 @@ Similarly, you can view the logs of other services.
 
 There would a time when you might want to backup your data from docker volumes to external storage like S3 or drives.
 
-Lets again run the `./setup.sh` command. You will again be prompted with the below options. This time select `8` to view logs.
+Lets again run the `./setup.sh` command. You will again be prompted with the below options. This time select `7` to Backup the data.
 
 ```bash
 Select a Action you want to perform:

deploy/selfhost/install.sh

@@ -390,7 +390,7 @@ fi
 
 # CPU ARCHITECHTURE BASED SETTINGS
 CPU_ARCH=$(uname -m)
-if [[ $CPU_ARCH == "amd64" || $CPU_ARCH == "x86_64" || ( $BRANCH == "master" && ( $CPU_ARCH == "arm64" || $CPU_ARCH == "aarch64" ) ) ]]; 
+if [[ $FORCE_CPU == "amd64" || $CPU_ARCH == "amd64" || $CPU_ARCH == "x86_64" || ( $BRANCH == "master" && ( $CPU_ARCH == "arm64" || $CPU_ARCH == "aarch64" ) ) ]]; 
 then
     USE_GLOBAL_IMAGES=1
     DOCKERHUB_USER=makeplane