diff --git a/Cargo.lock b/Cargo.lock
index 30e9a3b..70c984d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -8,6 +8,17 @@ version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f26201604c87b1e01bd3d98f8d5d9a8fcbb815e8cedb41ffccbeb4bf593a35fe"
 
+[[package]]
+name = "aes"
+version = "0.8.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b169f7a6d4742236a0a00c541b845991d0ac43e546831af1249753ab4c3aa3a0"
+dependencies = [
+ "cfg-if",
+ "cipher",
+ "cpufeatures",
+]
+
 [[package]]
 name = "aho-corasick"
 version = "1.1.3"
@@ -164,6 +175,31 @@ version = "3.16.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "79296716171880943b8470b5f8d03aa55eb2e645a4874bdbb28adb49162e012c"
 
+[[package]]
+name = "byteorder"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1fd0f2584146f6f2ef48085050886acf353beff7305ebd1ae69500e27c67f64b"
+
+[[package]]
+name = "bzip2"
+version = "0.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "49ecfb22d906f800d4fe833b6282cf4dc1c298f5057ca0b5445e5c209735ca47"
+dependencies = [
+ "bzip2-sys",
+]
+
+[[package]]
+name = "bzip2-sys"
+version = "0.1.13+1.0.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "225bff33b2141874fe80d71e07d6eec4f85c5c216453dd96388240f96e1acc14"
+dependencies = [
+ "cc",
+ "pkg-config",
+]
+
 [[package]]
 name = "cc"
 version = "1.0.98"
@@ -217,6 +253,16 @@ dependencies = [
  "phf_codegen",
 ]
 
+[[package]]
+name = "cipher"
+version = "0.4.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "773f3b9af64447d2ce9850330c473515014aa235e6a783b02db81ff39e4a3dad"
+dependencies = [
+ "crypto-common",
+ "inout",
+]
+
 [[package]]
 name = "clap"
 version = "4.5.37"
@@ -273,6 +319,12 @@ version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0b6a852b24ab71dffc585bcb46eaf7959d175cb865a7152e35b348d1b2960422"
 
+[[package]]
+name = "constant_time_eq"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7c74b8349d32d297c9134b8c88677813a227df8f779daa29bfc29c183fe3dca6"
+
 [[package]]
 name = "core-foundation-sys"
 version = "0.8.6"
@@ -288,6 +340,21 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "crc"
+version = "3.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "69e6e4d7b33a94f0991c26729976b10ebde1d34c3ee82408fb536164fa10d636"
+dependencies = [
+ "crc-catalog",
+]
+
+[[package]]
+name = "crc-catalog"
+version = "2.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "19d374276b40fb8bbdee95aef7c7fa6b5316ec764510eb64b8dd0e2ed0d7e7f5"
+
 [[package]]
 name = "crc32fast"
 version = "1.4.2"
@@ -318,9 +385,9 @@ dependencies = [
 
 [[package]]
 name = "crossbeam-utils"
-version = "0.8.20"
+version = "0.8.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "22ec99545bb0ed0ea7bb9b8e1e9122ea386ff8a48c0922e43f36d45ab09e0e80"
+checksum = "d0a5c400df2834b80a4c3327b3aad3a4c4cd4de0629063962b03235697506a28"
 
 [[package]]
 name = "crypto-common"
@@ -355,6 +422,21 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "deflate64"
+version = "0.1.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "da692b8d1080ea3045efaab14434d40468c3d8657e42abddfffca87b428f4c1b"
+
+[[package]]
+name = "deranged"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9c9e6a11ca8224451684bc0d7d5a7adbf8f2fd6887261a1cfc3c0432f9d4068e"
+dependencies = [
+ "powerfmt",
+]
+
 [[package]]
 name = "derive_arbitrary"
 version = "1.4.1"
@@ -386,6 +468,7 @@ checksum = "9ed9a281f7bc9b7576e61468ba615a66a5c8cfdff42420a70aa82701a3b1e292"
 dependencies = [
  "block-buffer",
  "crypto-common",
+ "subtle",
 ]
 
 [[package]]
@@ -411,6 +494,12 @@ dependencies = [
  "log",
 ]
 
+[[package]]
+name = "equivalent"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "877a4ace8713b0bcf2a4e7eec82529c029f1d0619886d18145fea96c3ffe5c0f"
+
 [[package]]
 name = "errno"
 version = "0.3.10"
@@ -481,8 +570,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "43a49c392881ce6d5c3b8cb70f98717b7c07aabbdff06687b9030dbfbe2725f8"
 dependencies = [
  "cfg-if",
+ "js-sys",
  "libc",
  "wasi 0.13.3+wasi-0.2.2",
+ "wasm-bindgen",
  "windows-targets",
 ]
 
@@ -525,6 +616,12 @@ dependencies = [
  "thiserror",
 ]
 
+[[package]]
+name = "hashbrown"
+version = "0.15.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bf151400ff0baff5465007dd2f3e717f3fe502074ca563069ce3a6629d07b289"
+
 [[package]]
 name = "heck"
 version = "0.5.0"
@@ -537,6 +634,15 @@ version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7f24254aa9a54b5c858eaee2f5bccdb46aaf0e486a595ed5fd8f86ba55232a70"
 
+[[package]]
+name = "hmac"
+version = "0.12.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6c49c37c09c17a53d937dfbb742eb3a961d65a994e6bcdcf37e7399d0cc8ab5e"
+dependencies = [
+ "digest",
+]
+
 [[package]]
 name = "humansize"
 version = "2.1.3"
@@ -601,6 +707,25 @@ dependencies = [
  "winapi-util",
 ]
 
+[[package]]
+name = "indexmap"
+version = "2.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cea70ddb795996207ad57735b50c5982d8844f38ba9ee5f1aedcfb708a2aa11e"
+dependencies = [
+ "equivalent",
+ "hashbrown",
+]
+
+[[package]]
+name = "inout"
+version = "0.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "879f10e63c20629ecabbb64a8010319738c66a5cd0c29b02d63d272b03751d01"
+dependencies = [
+ "generic-array",
+]
+
 [[package]]
 name = "is_terminal_polyfill"
 version = "1.70.0"
@@ -624,10 +749,11 @@ dependencies = [
 
 [[package]]
 name = "js-sys"
-version = "0.3.69"
+version = "0.3.77"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "29c15563dc2726973df627357ce0c9ddddbea194836909d655df6a75d2cf296d"
+checksum = "1cfaf33c695fc6e08064efbc1f72ec937429614f25eef83af942d0e227c3a28f"
 dependencies = [
+ "once_cell",
  "wasm-bindgen",
 ]
 
@@ -690,12 +816,39 @@ version = "0.9.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fe7db12097d22ec582439daf8618b8fdd1a7bef6270e9af3b1ebcd30893cf413"
 
+[[package]]
+name = "lockfree-object-pool"
+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9374ef4228402d4b7e403e5838cb880d9ee663314b0a900d5a6aabf0c213552e"
+
 [[package]]
 name = "log"
 version = "0.4.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "90ed8c1e510134f979dbc4f070f87d4313098b704861a105fe34231c70a3901c"
 
+[[package]]
+name = "lzma-rs"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "297e814c836ae64db86b36cf2a557ba54368d03f6afcd7d947c266692f71115e"
+dependencies = [
+ "byteorder",
+ "crc",
+]
+
+[[package]]
+name = "lzma-sys"
+version = "0.1.20"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5fda04ab3764e6cde78b9974eec4f779acaba7c4e84b36eca3cf77c581b85d27"
+dependencies = [
+ "cc",
+ "libc",
+ "pkg-config",
+]
+
 [[package]]
 name = "mdbook"
 version = "0.4.48"
@@ -742,6 +895,8 @@ dependencies = [
  "syntect",
  "tempfile",
  "textwrap",
+ "walkdir",
+ "zip",
 ]
 
 [[package]]
@@ -792,6 +947,12 @@ dependencies = [
  "windows-sys 0.52.0",
 ]
 
+[[package]]
+name = "num-conv"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "51d515d32fb182ee37cda2ccdcb92950d6a3c2893aa280e540671c2cd0f3b1d9"
+
 [[package]]
 name = "num-modular"
 version = "0.6.1"
@@ -843,6 +1004,16 @@ dependencies = [
  "regex",
 ]
 
+[[package]]
+name = "pbkdf2"
+version = "0.12.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f8ed6a7761f76e3b9f92dfb0a60a6a6477c61024b775147ff0973a02653abaf2"
+dependencies = [
+ "digest",
+ "hmac",
+]
+
 [[package]]
 name = "percent-encoding"
 version = "2.3.1"
@@ -947,6 +1118,12 @@ dependencies = [
  "linereader",
 ]
 
+[[package]]
+name = "powerfmt"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "439ee305def115ba05938db6eb1644ff94165c5ab5e9420d1c1bcedbba909391"
+
 [[package]]
 name = "ppv-lite86"
 version = "0.2.17"
@@ -1111,6 +1288,12 @@ dependencies = [
  "windows-sys 0.59.0",
 ]
 
+[[package]]
+name = "rustversion"
+version = "1.0.20"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "eded382c5f5f786b989652c49544c4877d9f015cc22e145a5ea8ea66c2921cd2"
+
 [[package]]
 name = "ryu"
 version = "1.0.18"
@@ -1164,6 +1347,17 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "sha1"
+version = "0.10.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e3bf829a2d51ab4a5ddf1352d8470c140cadc8301b2ae1789db023f01cedd6ba"
+dependencies = [
+ "cfg-if",
+ "cpufeatures",
+ "digest",
+]
+
 [[package]]
 name = "sha2"
 version = "0.10.8"
@@ -1181,6 +1375,12 @@ version = "1.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0fda2ff0d084019ba4d7c6f371c95d8fd75ce3524c3cb8fb653a3023f6323e64"
 
+[[package]]
+name = "simd-adler32"
+version = "0.3.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d66dc143e6b11c1eddc06d5c423cfc97062865baf299914ab64caa38182078fe"
+
 [[package]]
 name = "siphasher"
 version = "0.3.11"
@@ -1203,6 +1403,12 @@ version = "0.11.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7da8b5736845d9f2fcb837ea5d9e2628564b3b043a70948a3f0b778838c5fb4f"
 
+[[package]]
+name = "subtle"
+version = "2.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "13c2bddecc57b384dee18652358fb23172facb8a2c51ccc10d74c157bdea3292"
+
 [[package]]
 name = "syn"
 version = "2.0.86"
@@ -1305,6 +1511,25 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "time"
+version = "0.3.41"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8a7619e19bc266e0f9c5e6686659d394bc57973859340060a69221e57dbc0c40"
+dependencies = [
+ "deranged",
+ "num-conv",
+ "powerfmt",
+ "serde",
+ "time-core",
+]
+
+[[package]]
+name = "time-core"
+version = "0.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c9e9a38711f559d9e3ce1cdb06dd7c5b8ea546bc90052da6d06bb76da74bb07c"
+
 [[package]]
 name = "toml"
 version = "0.5.11"
@@ -1436,23 +1661,24 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen"
-version = "0.2.92"
+version = "0.2.100"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4be2531df63900aeb2bca0daaaddec08491ee64ceecbee5076636a3b026795a8"
+checksum = "1edc8929d7499fc4e8f0be2262a241556cfc54a0bea223790e71446f2aab1ef5"
 dependencies = [
  "cfg-if",
+ "once_cell",
+ "rustversion",
  "wasm-bindgen-macro",
 ]
 
 [[package]]
 name = "wasm-bindgen-backend"
-version = "0.2.92"
+version = "0.2.100"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "614d787b966d3989fa7bb98a654e369c762374fd3213d212cfc0251257e747da"
+checksum = "2f0a0651a5c2bc21487bde11ee802ccaf4c51935d0d3d42a6101f98161700bc6"
 dependencies = [
  "bumpalo",
  "log",
- "once_cell",
  "proc-macro2",
  "quote",
  "syn",
@@ -1461,9 +1687,9 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-macro"
-version = "0.2.92"
+version = "0.2.100"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a1f8823de937b71b9460c0c34e25f3da88250760bec0ebac694b49997550d726"
+checksum = "7fe63fc6d09ed3792bd0897b314f53de8e16568c2b3f7982f468c0bf9bd0b407"
 dependencies = [
  "quote",
  "wasm-bindgen-macro-support",
@@ -1471,9 +1697,9 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-macro-support"
-version = "0.2.92"
+version = "0.2.100"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e94f17b526d0a461a191c78ea52bbce64071ed5c04c9ffe424dcb38f74171bb7"
+checksum = "8ae87ea40c9f689fc23f209965b6fb8a99ad69aeeb0231408be24920604395de"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1484,9 +1710,12 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-shared"
-version = "0.2.92"
+version = "0.2.100"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "af190c94f2773fdb3729c55b007a722abb5384da03bc0986df4c289bf5567e96"
+checksum = "1a05d73b933a847d6cccdda8f838a22ff101ad9bf93e33684f39c1f5f0eece3d"
+dependencies = [
+ "unicode-ident",
+]
 
 [[package]]
 name = "winapi"
@@ -1625,8 +1854,107 @@ dependencies = [
  "bitflags 2.5.0",
 ]
 
+[[package]]
+name = "xz2"
+version = "0.1.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "388c44dc09d76f1536602ead6d325eb532f5c122f17782bd57fb47baeeb767e2"
+dependencies = [
+ "lzma-sys",
+]
+
 [[package]]
 name = "yansi"
 version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cfe53a6657fd280eaa890a3bc59152892ffa3e30101319d168b781ed6529b049"
+
+[[package]]
+name = "zeroize"
+version = "1.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ced3678a2879b30306d323f4542626697a464a97c0a07c9aebf7ebca65cd4dde"
+dependencies = [
+ "zeroize_derive",
+]
+
+[[package]]
+name = "zeroize_derive"
+version = "1.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ce36e65b0d2999d2aafac989fb249189a141aee1f53c612c1f37d72631959f69"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "zip"
+version = "2.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1dcb24d0152526ae49b9b96c1dcf71850ca1e0b882e4e28ed898a93c41334744"
+dependencies = [
+ "aes",
+ "arbitrary",
+ "bzip2",
+ "constant_time_eq",
+ "crc32fast",
+ "crossbeam-utils",
+ "deflate64",
+ "flate2",
+ "getrandom 0.3.1",
+ "hmac",
+ "indexmap",
+ "lzma-rs",
+ "memchr",
+ "pbkdf2",
+ "sha1",
+ "time",
+ "xz2",
+ "zeroize",
+ "zopfli",
+ "zstd",
+]
+
+[[package]]
+name = "zopfli"
+version = "0.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e5019f391bac5cf252e93bbcc53d039ffd62c7bfb7c150414d61369afe57e946"
+dependencies = [
+ "bumpalo",
+ "crc32fast",
+ "lockfree-object-pool",
+ "log",
+ "once_cell",
+ "simd-adler32",
+]
+
+[[package]]
+name = "zstd"
+version = "0.13.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e91ee311a569c327171651566e07972200e76fcfe2242a4fa446149a3881c08a"
+dependencies = [
+ "zstd-safe",
+]
+
+[[package]]
+name = "zstd-safe"
+version = "7.2.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8f49c4d5f0abb602a93fb8736af2a4f4dd9512e36f7f570d66e65ff867ed3b9d"
+dependencies = [
+ "zstd-sys",
+]
+
+[[package]]
+name = "zstd-sys"
+version = "2.0.15+zstd.1.5.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "eb81183ddd97d0c74cedf1d50d85c8d08c1b8b68ee863bdee9e706eedba1a237"
+dependencies = [
+ "cc",
+ "pkg-config",
+]
diff --git a/i18n-helpers/Cargo.toml b/i18n-helpers/Cargo.toml
index d3caa64..331e4b6 100644
--- a/i18n-helpers/Cargo.toml
+++ b/i18n-helpers/Cargo.toml
@@ -25,6 +25,8 @@ semver = "1.0.26"
 serde_json.workspace = true
 syntect = { version = "5.2.0", default-features = false, features = ["parsing", "default-syntaxes", "regex-fancy"] }
 textwrap = { version = "0.16.2", default-features = false }
+walkdir = "2.5.0"
+zip = "2.6.1"
 
 [dev-dependencies]
 pretty_assertions.workspace = true
diff --git a/i18n-helpers/src/bin/mdbook-translate-helper.rs b/i18n-helpers/src/bin/mdbook-translate-helper.rs
new file mode 100644
index 0000000..2af031d
--- /dev/null
+++ b/i18n-helpers/src/bin/mdbook-translate-helper.rs
@@ -0,0 +1,192 @@
+use std::env;
+use std::fs;
+use std::io;
+use std::io::BufRead;
+use std::io::Read;
+use std::io::Write;
+use::std::path::Path;
+use std::process::Command;
+use anyhow::Context;
+use anyhow::Error;
+use chrono;
+use walkdir::WalkDir;
+use zip::result::ZipError;
+use zip::write::SimpleFileOptions;
+use std::fs::File;
+
+fn build_translation(locale: String, dest_dir: String) -> Result<(), Error>{
+  if locale == "en" {
+    println!("::group::Building English course");
+  } else {
+    let locale_ref = &locale;
+    let file = fs::File::open(format!("po/{locale_ref}.po"))?;
+    let reader = io::BufReader::new(file);
+
+    let mut pot_creation_date: Option<String> = None;
+
+    for line in reader.lines() {
+      let line = line.expect("Error reading line");
+      if line.contains("POT-Creation-Date") {
+        let line_parts: Vec<&str> = line.split(":").collect();
+        pot_creation_date = Some(line_parts[1].trim_start().to_string());
+        break;
+      }
+    }
+
+    if pot_creation_date.is_none() {
+      let now = chrono::Local::now();
+      pot_creation_date = Some(now.format("%Y-%m-%dT%H:%M:%S").to_string());
+    }
+
+    println!("::group::Building {locale_ref} translation as of {:?}", pot_creation_date.clone().unwrap());
+
+    // Back-date the source to POT-Creation-Date. The content lives in two directories:
+    fs::remove_dir_all("src")?;
+    fs::remove_dir_all("third_party")?;
+
+    let output = Command::new("git").args(["rev-list", "-n", "1", "--before", &pot_creation_date.unwrap(), "@"]).output().unwrap();
+    let result_str= String::from_utf8(output.stdout).unwrap().replace("\n", "");
+
+    Command::new("git").args(["restore","--source", &result_str, "src/", "third_party/"]).output()?;
+
+    env::set_var("MDBOOK_BOOK__LANGUAGE", locale_ref);
+    env::set_var("MDBOOK_OUTPUT__HTML__SITE_URL", format!("/comprehensive-rust/{locale_ref}/"));
+    env::set_var("MDBOOK_OUTPUT__HTML__REDIRECT", "{}");
+  }
+
+  // Enable mdbook-pandoc to build PDF version of the course
+  env::set_var("MDBOOK_OUTPUT__PANDOC__DISABLED", "false");
+
+  let dest_arg = format!("-d{dest_dir}");
+  match Command::new("mdbook").arg("build").arg(dest_arg).output() {
+    Ok(_) => (),
+    Err(err) => {
+      return Err(err.into());
+    }
+  }
+
+  // Disable the redbox button in built versions of the course
+  fs::write(format!("{}/html/theme/redbox.js", dest_dir), "// Disabled in published builds, see build.sh")?;
+  let pdf_from_dir = format!("{}/pandoc/pdf/comprehensive-rust.pdf", dest_dir);
+  let pdf_dest_dir = format!("{}/html/comprehensive-rust.pdf", dest_dir);
+
+  let pdf_from_path = Path::new(&pdf_from_dir);
+  let pdf_dest_path = Path::new(&pdf_dest_dir);
+
+  fs::copy(pdf_from_path, pdf_dest_path)?;
+  fs::remove_file(pdf_from_path)?;
+
+  let src_dir = format!("{dest_dir}/exerciser/comprehensive-rust-exercises");
+  let src_path = Path::new(&src_dir);
+  if !src_path.is_dir() {
+    return Err(ZipError::FileNotFound.into());
+  }
+
+  let zip_file_str = format!("{dest_dir}/html/comprehensive-rust-exercises.zip");
+  let zip_file = File::create(Path::new(&zip_file_str))?;
+
+  let options = SimpleFileOptions::default().compression_method(zip::CompressionMethod::Stored);
+
+  let mut zip = zip::ZipWriter::new(zip_file);
+  let mut buffer = Vec::new();
+
+  for entry in WalkDir::new(src_path).into_iter().filter_map(|e| e.ok()) {
+    let path = entry.path();
+    let name = path.strip_prefix(src_path)?;
+    let name_as_str = name.to_str().map(str::to_owned).with_context(|| format!("{name:?} is a non utf-8 path"))?;
+
+    if path.is_file() {
+      zip.start_file(name_as_str, options)?;
+      let mut f = File::open(path)?;
+
+      f.read_to_end(&mut buffer)?;
+      zip.write_all(&buffer)?;
+      buffer.clear();
+    } else if !name.as_os_str().is_empty() {
+      zip.add_directory(name_as_str, options)?;
+    }
+  }
+  zip.finish()?;
+
+  // clean up repository
+  Command::new("git").args(["reset","--hard"]).output()?;
+
+  Ok(())
+}
+
+
+fn update(filename: &str) -> Result<(), Error> {
+  match Command::new("mdbook").arg("build").output() {
+    Ok(_) => (),
+    Err(err) => return Err(err.into())
+  };
+
+  match Command::new("msgmerge").args(["--update", filename, "book/xgettext/messages.pot"]).output() {
+    Ok(_) => (),
+    Err(err) => return Err(err.into())
+  };
+
+  Ok(())
+}
+
+fn build(dir: &str) -> Result<(), Error>{
+  match env::var("LANGUAGES") {
+    Ok(languages) => {
+      for language in languages.split(" ") {
+        let dest_dir = dir.to_owned() + "/" + language;
+        match build_translation(language.to_string(), dest_dir) {
+          Ok(_) => (),
+          Err(err) => return Err(err.into())
+        }
+      }
+      return Ok(())
+    },
+    Err(err) => return Err(err.into())
+  }
+}
+
+fn run_helper(args: &[String]) -> () {
+  let cmd_name = &args[0];
+
+  if args.len() == 1 {
+      panic!("No arguments provided. Usage {cmd_name} <action>")
+  }
+  let action = args[1].clone();
+
+  match action.as_str() {
+    "build" => {
+      if args.len() != 3 {
+        panic!("Usage: {cmd_name} <dest-dir>");
+      }
+      let dir = args[2].clone();
+
+      match build(&dir) {
+        Ok(_) => (),
+        Err(err) => panic!("::group::Error building translations: {}", err)
+      }
+    },
+    "update" => {
+      if args.len() != 3 {
+        panic!("Usage: {cmd_name} <locale>");
+      }
+      let locale = args[2].clone();
+      let filename = format!("po/{locale}.po");
+
+      println!("::group::Updating {locale} translation");
+      match update(&filename) {
+        Ok(_) => (),
+        Err(err) => panic!("::group::Error updating translation: {}", err)
+      }
+    },
+    _ => panic!("Supported commands are `build` and `update`")
+  };
+
+}
+
+fn main() {
+  let args: Vec<String> = env::args().collect();
+
+  run_helper(&args);
+
+  println!("::endgroup::");
+}